0001193125-26-273540 | 11-K | XBRL Viewer

PLAN TERMINATION	12 Months Ended
Dec. 31, 2025
EBP 002 [Member]
Employee Benefit Plan, Plan Termination [Line Items]
PLAN TERMINATION	6. PLAN TERMINATION Although it has not expressed any intent to do so, the Bank has the right under the Plan to discontinue its contributions at any time and to terminate the Plan subject to the provisions of ERISA. In the event of Plan termination, participants would become 100% vested in their entire account.

PARTY-IN-INTEREST	12 Months Ended
Dec. 31, 2025
EBP 002 [Member]
EBP, Related Party and Party-in-Interest Transactions [Line Items]
PARTY-IN-INTEREST	5. PARTY-IN-INTEREST Certain Plan investments are shares of registered investment companies that are managed by the trustee of the Plan’s assets, therefore these transactions qualify as party-in-interest. In 2025 and 2024, the Plan provided participants the election of an investment in Pathfinder Bancorp, Inc.’s common stock through self-directed brokerage accounts. As of December 31, 2025, the Plan held 124,338 shares of Pathfinder Bancorp, Inc.’s common stock fund at a per-share price of $14.03. As of December 31, 2024, the Plan held 145,353 shares of Pathfinder Bancorp, Inc.’s common stock fund at a per-share price of $17.06. In addition, the Plan issues notes receivable to participants, which are secured by the balances in the participants’ accounts. Therefore, related transactions qualify as party-in-interest transactions. All other transactions which may be considered party-in-interest transactions relate to normal plan management and administrative services, and the related payment of fees.

FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Dec. 31, 2025

EBP, Investment, Fair Value and NAV [Line Items]

The following table sets forth by level, within the fair value hierarchy, the Plan’s assets at fair value as of December 31, 2025 and 2024.


	Assets at Fair Value as of December 31, 2025
	Level 1		Level 2		Level 3		Total

Mutual Funds	$	17,912,772	$	-	$	-	$	17,912,772
Fixed Annuities		-		278,082		-		278,082
Total		17,912,772		278,082		-		18,190,854

Self-directed brokerage accounts:
Common stock-employer stock		1,754,416		-		-		1,754,416
Self-directed brokerage accounts		345,014		-		-		345,014
Total self-directed brokerage accounts		2,099,430		-		-		2,099,430

Collective Trust Funds(a)								493,639

Total investments	$	20,012,202	$	278,082	$	-	$	20,783,923


	Assets at Fair Value as of December 31, 2024
	Level 1		Level 2		Level 3		Total

Mutual Funds	$	15,908,553	$	-	$	-	$	15,908,553
Fixed Annuities		-		457,782		-		457,782
Total		15,908,553		457,782		-		16,366,335

Self-directed brokerage accounts:
Common stock-employer stock		2,479,730		-		-		2,479,730
Self-directed brokerage accounts		761,621		-		-		761,621
Total self-directed brokerage accounts		3,241,351		-		-		3,241,351

Collective Trust Funds(a)								446,807

Total investments	$	19,149,904	$	457,782	$	-	$	20,054,493

(a) In accordance with Accounting Standards Codification (“ASC”) Subtopic 820-10, certain investments that were measured at net asset value per share (or its equivalent) have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the line items presented in the statements of net assets available for benefits.

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Tabular disclosure of fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, fair value measured at net asset value per share as practical expedient (NAV).

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RISKS AND UNCERTAINTIES	12 Months Ended
Dec. 31, 2025
EBP 002 [Member]
EBP, Risk and Uncertainty [Line Items]
RISKS AND UNCERTAINTIES	7. RISKS AND UNCERTAINTIES The Plan invests in various investment securities. Investment securities are exposed to various risks such as interest rate, market, and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect participants’ account balances and the amounts reported in the statements of net assets available for benefits.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Additional Information) (Details) - USD ($)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
EBP 002 [Member]
EBP, Accounting Policy [Line Items]
Administrative expenses	$ 62,547	$ 59,096

DESCRIPTION OF PLAN (Additional Information) (Details) - EBP 002 [Member] - USD ($)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
EBP, Description of Plan [Line Items]
Participant contribution annual compensation percentage	3.00%
Note receivable from participant vested percentage	50.00%
Note receivable from participant vested amount	$ 50,000
Note receivable from participant minimum borrowing amount	1,000
Forfeited non-vested accounts	16,842	$ 129,001
Forfeited nonvested account contribution	$ 139,094	$ 0
First 3% of employee
EBP, Description of Plan [Line Items]
Participant compensation matched, percentage	100.00%
Participant contribution deferral rate	3.00%
Next 3% of employee
EBP, Description of Plan [Line Items]
Participant compensation matched, percentage	50.00%
Participant contribution deferral rate	3.00%
Minimum [Member]
EBP, Description of Plan [Line Items]
Participant loan percentage	4.25%
Maximum [Member]
EBP, Description of Plan [Line Items]
Participant loan percentage	9.50%

STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS - EBP 002 [Member] - USD ($)	Dec. 31, 2025	Dec. 31, 2024
ASSETS
INVESTMENTS, at fair value	$ 20,783,923	$ 20,054,493
NOTES RECEIVABLE FROM PARTICIPANTS	435,889	442,043
EMPLOYER CONTRIBUTIONS RECEIVABLE	7,610	22,192
EMPLOYEE CONTRIBUTIONS RECEIVABLE	8,669	28,259
Total Receivables	452,168	492,494
Net assets available for benefits	$ 21,236,091	$ 20,546,987

- Definition

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-Subparagraph (SX 210.6A-03(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-04(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-04(7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

+ Details

SCHEDULE H - SCHEDULE OF ASSETS (Held at End of Year) - Schedule Of Assets (Held at End of Year) (Details) - EBP 002 [Member]	12 Months Ended
	Dec. 31, 2025 USD ($)
EBP, Schedule of Asset Held for Investment [Line Items]
Entity Tax Identification Number	15-0408130
Plan Number	002
Current Value	$ 21,219,812
Investment, Identifier [Axis]: Alphabet Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Alphabet Inc [Member]
Current Value	$ 406
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Amazon.com Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Amazon.com Inc [Member]
Current Value	$ 40
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: American Funds American Mutual R6 Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	American Funds American Mutual R6 [Member]
Current Value	$ 1,790,723
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: American Funds Bond Fund of Amer R6 Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	American Funds Bond Fund of Amer R6 [Member]
Current Value	$ 735,427
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: American Funds Emerging Markets BD R6 Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	American Funds Emerging Markets BD R6 [Member]
Current Value	$ 82,608
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: American Funds New World R6 Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	American Funds Emerging Markets BD R6 [Member]
Current Value	$ 660,551
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Apple Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Apple Inc [Member]
Current Value	$ 32,524
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Ascent Solar Technologies Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Ascent Solar Technologies Inc [Member]
Current Value	$ 4
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: BlackRock High Yield Bond Portfolio K Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	BlackRock High Yield Bond Portfolio K [Member]
Current Value	$ 174,155
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Broadcom Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Broadcom Inc [Member]
Current Value	$ 83
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Canopy Growth Corp Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Canopy Growth Corp [Member]
Current Value	$ 8
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Chipotle Mexican Grill Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Chipotle Mexican Grill [Member]
Current Value	$ 5,550
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: ClearBridge Select IS Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	ClearBridge Select IS [Member]
Current Value	$ 451,949
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Clearway Energy Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Clearway Energy Inc [Member]
Current Value	$ 133
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Constellation Energy Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Constellation Energy [Member]
Current Value	$ 3,188
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Crowdstrike Holdings Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Crowdstrike Holdings Inc [Member]
Current Value	$ 37
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: EI Fixed Account Fixed Annuity
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	EI Fixed Account [Member]
Current Value	$ 278,082
EBP, Investment, Current Value, Type [Extensible Enumeration]	Fixed Annuities [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Embecta Corporation Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Embecta Corporation [Member]
Current Value	$ 1,141
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Exelixis Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Exelixis Inc [Member]
Current Value	$ 44
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity 500 Index Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Fidelity 500 Index [Member]
Current Value	$ 2,263,513
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity Advisor Intl Small Cap Z Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Fidelity Advisor Intl Small Cap Z [Member]
Current Value	$ 405,336
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity Advisor Small Cap Value Z Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Fidelity Advisor Small Cap Value Z [Member]
Current Value	$ 293,592
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity Mid Cap Index Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Fidelity Mid Cap Index [Member]
Current Value	$ 846,968
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Fidelity Small Cap Index Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Fidelity Small Cap Index [Member]
Current Value	$ 581,333
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Franklin DynaTech R6 Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Franklin DynaTech R6 [Member]
Current Value	$ 1,823,631
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Franklin Intl Growth R6 Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Franklin Intl Growth R6 [Member]
Current Value	$ 262,150
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: GE Aerospace Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	GE Aerospace [Member]
Current Value	$ 3,696
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: GE Heathcare Techno Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	GE Heathcare Techno [Member]
Current Value	$ 328
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: GE Vernova Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	GE Vernova Inc [Member]
Current Value	$ 1,961
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Gilead Sciences Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Gilead Sciences Inc [Member]
Current Value	$ 34
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Global Technologies Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Global Technologies [Member]
Current Value	$ 1
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: JPMorgan Hedged Equity 2 R6 Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	JPMorgan Hedged Equity 2 R6 [Member]
Current Value	$ 117,128
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Janus Henderson Contrarian N Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Janus Henderson Contrarian N [Member]
Current Value	$ 203,474
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Jet Blue Airways Corp Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Jet Blue Airways Corp [Member]
Current Value	$ 455
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Keycorp Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Keycorp [Member]
Current Value	$ 845
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Kinross Gold Corp Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Kinross Gold Corp [Member]
Current Value	$ 56
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Lord Abbett Bond Debenture R6 Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Lord Abbett Bond Debenture R6 [Member]
Current Value	$ 268,145
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Lord Abbett Developing Growth R6 Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Lord Abbett Developing Growth R6 [Member]
Current Value	$ 197,921
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: M & T Bank Corp Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	M & T Bank Corp [Member]
Current Value	$ 11,887
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Microsoft Corp Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Microsoft Corp [Member]
Current Value	$ 38
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: NVIDIA Corp Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	NVIDIA Corp [Member]
Current Value	$ 97,006
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Netflix Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Netflix Inc [Member]
Current Value	$ 94
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Notes receivable from participants
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Notes Receivable from Participants [Member]
Current Value	$ 435,889
Investment, Identifier [Axis]: Notes receivable from participants \| Maximum
EBP, Schedule of Asset Held for Investment [Line Items]
Rate of Interest	9.50%
Investment, Identifier [Axis]: Notes receivable from participants \| Minimum
EBP, Schedule of Asset Held for Investment [Line Items]
Rate of Interest	4.25%
Investment, Identifier [Axis]: PGIM QMA International Equity R6 Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	PGIM QMA International Equity R6 [Member]
Current Value	$ 514,273
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: PGIM US Real Estate R6 Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	PGIM US Real Estate R6 [Member]
Current Value	$ 151,241
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: PIMCO Int Bond (USD-Hedged) Inst Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	PIMCO Int Bond (USD-Hedged) Inst [Member]
Current Value	$ 232
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Palantir Technolgies Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Palantir Technolgies [Member]
Current Value	$ 214
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Palo Alto Networks Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Palo Alto Networks [Member]
Current Value	$ 389
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Pathfinder Bancorp, Inc. Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Pathfinder Bancorp, Inc [Member]
Current Value	$ 1,754,416
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
EBP, Asset Held for Investment, Party-in-Interest [true false]	true
Investment, Identifier [Axis]: Paypal Holdings Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Paypal Holdings Inc [Member]
Current Value	$ 117
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Planet Fitness Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Planet Fitness Inc [Member]
Current Value	$ 12,359
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Pyxis Oncology Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Pyxis Oncology Inc [Member]
Current Value	$ 138
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Robinhood Mkts Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Robinhood Mkts Inc [Member]
Current Value	$ 113
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Schwab Money Market Portfolio Money Market Fund
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Schwab Money Market Portfolio [Member]
Current Value	$ 167,257
EBP, Investment, Current Value, Type [Extensible Enumeration]	Money Market Funds [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Sofi Technologies Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Sofi Technologies Inc [Member]
Current Value	$ 105
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Sorrento Theraputics Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Sorrento Theraputics Inc [Member]
Current Value	$ 7
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: State Street Global Eq ex-US Index K Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	State Street Global Eq ex-US Index K [Member]
Current Value	$ 184,741
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: State Street Target Retirement 2025 K Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	State Street Target Retirement 2025 K [Member]
Current Value	$ 500,572
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: State Street Target Retirement 2030 K Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	State Street Target Retirement 2030 K [Member]
Current Value	$ 1,260,636
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: State Street Target Retirement 2035 K Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	State Street Target Retirement 2035 K [Member]
Current Value	$ 110,560
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: State Street Target Retirement 2040 K Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	State Street Target Retirement 2040 K [Member]
Current Value	$ 133,542
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: State Street Target Retirement 2045 K Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	State Street Target Retirement 2045 K [Member]
Current Value	$ 1,539,879
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: State Street Target Retirement 2050 K Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	State Street Target Retirement 2050 K [Member]
Current Value	$ 749,285
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: State Street Target Retirement 2055 K Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	State Street Target Retirement 2055 K [Member]
Current Value	$ 777,738
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: State Street Target Retirement 2060 K Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	State Street Target Retirement 2060 K [Member]
Current Value	$ 115,177
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: State Street Target Retirement 2065 K Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	State Street Target Retirement 2065 K [Member]
Current Value	$ 168,242
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: State Street Target Retirement K Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	State Street Target Retirement K [Member]
Current Value	$ 430,257
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: State Street US Bond Index Non-Lending K Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	State Street US Bond Index Non-Lending K [Member]
Current Value	$ 493,639
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Collective Trust [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
EBP, Asset Held for Investment, Party-in-Interest [true false]	true
Investment, Identifier [Axis]: Tesla Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Tesla Inc [Member]
Current Value	$ 1,374
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Tilray Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Tilray Inc [Member]
Current Value	$ 18
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Uber Technologies Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Uber Technologies Inc [Member]
Current Value	$ 2,451
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vanguard S&P 500 Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Vanguard S&P 500 [Member]
Current Value	$ 627
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Verisign Inc Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Verisign Inc [Member]
Current Value	$ 41
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vertex Pharmaceutical Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Vertex Pharmaceutical [Member]
Current Value	$ 31
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Vistra Corp Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Vistra Corp [Member]
Current Value	$ 33
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Walt Disney Common stock
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Walt Disney [Member]
Current Value	$ 808
EBP, Investment, Current Value, Type [Extensible Enumeration]	Common Stock [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
Investment, Identifier [Axis]: Western Asset Core Bond IS Mutual Funds
EBP, Schedule of Asset Held for Investment [Line Items]
EBP, Investment, Issuer Name [Extensible Enumeration]	Western Asset Core Bond IS [Member]
Current Value	$ 117,166
EBP, Investment, Current Value, Type [Extensible Enumeration]	Mutual Fund [Member]
EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]	us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember
EBP, Asset Held for Investment, Party-in-Interest [true false]	true

SCHEDULE H - SCHEDULE OF ASSETS (Held at End of Year)

12 Months Ended

Dec. 31, 2025

EBP 002 [Member]

EBP, Schedule of Asset Held for Investment [Line Items]

Schedule of Assets (Held at End of Year)


PATHFINDER BANK 401(K) SAVINGS PLAN
SCHEDULE H - LINE 4(i) - SCHEDULE OF ASSETS (Held at End of Year)
EIN: 15-0408130 PLAN NUMBER: 002
DECEMBER 31, 2025


(a)	Identity of Issuer, Borrower, Lessor or Similar Party (b)	Description of Investment Including Maturity Date, Rate of Interest, Collateral, Par, or Maturity Value (c )	Cost (d)	Current Value (e)

*	Pathfinder Bancorp, Inc.	Common stock	**	$	1,754,416
	Alphabet Inc	Common stock	**		406
	Amazon.com Inc	Common stock	**		40
	Apple Inc	Common stock	**		32,524
	Ascent Solar Technologies Inc	Common stock	**		4
	Broadcom Inc	Common stock	**		83
	Canopy Growth Corp	Common stock	**		8
	Chipotle Mexican Grill	Common stock	**		5,550
	Clearway Energy Inc	Common stock	**		133
	Constellation Energy	Common stock	**		3,188
	Crowdstrike Holdings Inc	Common stock	**		37
	Embecta Corporation	Common stock	**		1,141
	Exelixis Inc	Common stock	**		44
	GE Aerospace	Common stock	**		3,696
	GE Heathcare Techno	Common stock	**		328
	GE Vernova Inc	Common stock	**		1,961
	Gilead Sciences Inc	Common stock	**		34
	Global Technologies	Common stock	**		1
	Jet Blue Airways Corp	Common stock	**		455
	Keycorp	Common stock	**		845
	Kinross Gold Corp	Common stock	**		56
	M & T Bank Corp	Common stock	**		11,887
	Microsoft Corp	Common stock	**		38
	Netflix Inc	Common stock	**		94
	NVIDIA Corp	Common stock	**		97,006
	Palantir Technolgies	Common stock	**		214
	Palo Alto Networks	Common stock	**		389
	Paypal Holdings Inc	Common stock	**		117
	Planet Fitness Inc	Common stock	**		12,359
	Pyxis Oncology Inc	Common stock	**		138
	Robinhood Mkts Inc	Common stock	**		113
	Sofi Technologies Inc	Common stock	**		105
	Sorrento Theraputics Inc	Common stock	**		7
	Tesla Inc	Common stock	**		1,374
	Tilray Inc	Common stock	**		18
	Uber Technologies Inc	Common stock	**		2,451
	Vanguard S&P 500	Mutual Funds	**		627
	Verisign Inc	Common stock	**		41
	Vertex Pharmaceutical	Common stock	**		31
	Vistra Corp	Common stock	**		33
	Walt Disney	Common stock	**		808
	Schwab Money Market Portfolio	Money Market Fund	**		167,257


PATHFINDER BANK 401(K) SAVINGS PLAN
SCHEDULE H- LINE 4(i) - SCHEDULE OF ASSETS (Held at End of Year)
EIN: 15-0408130 PLAN NUMBER: 002
December 31, 2025
(Continued)


(a)	Identity of Issuer, Borrower, Lessor or Similar Party (b)	Description of Investment Including Maturity Date, Rate of Interest, Collateral, Par, or Maturity Value (c )	Cost (d)	Current Value (e)
	American Funds American Mutual R6	Mutual Funds	**		1,790,723
	American Funds Bond Fund of Amer R6	Mutual Funds	**		735,427
	American Funds Emerging Markets BD R6	Mutual Funds	**		82,608
	American Funds New World R6	Mutual Funds	**		660,551
	BlackRock High Yield Bond Portfolio K	Mutual Funds	**		174,155
	ClearBridge Select IS	Mutual Funds	**		451,949
	EI Fixed Account	Fixed Annuity	**		278,082
	Fidelity 500 Index	Mutual Funds	**		2,263,513
	Fidelity Advisor Intl Small Cap Z	Mutual Funds	**		405,336
	Fidelity Advisor Small Cap Value Z	Mutual Funds	**		293,592
	Fidelity Mid Cap Index	Mutual Funds	**		846,968
	Fidelity Small Cap Index	Mutual Funds	**		581,333
	Franklin DynaTech R6	Mutual Funds	**		1,823,631
	Franklin Intl Growth R6	Mutual Funds	**		262,150
	Janus Henderson Contrarian N	Mutual Funds	**		203,474
	JPMorgan Hedged Equity 2 R6	Mutual Funds	**		117,128
	Lord Abbett Bond Debenture R6	Mutual Funds	**		268,145
	Lord Abbett Developing Growth R6	Mutual Funds	**		197,921
	PGIM QMA International Equity R6	Mutual Funds	**		514,273
	PGIM US Real Estate R6	Mutual Funds	**		151,241
	PIMCO Int Bond (USD-Hedged) Inst	Mutual Funds	**		232
	State Street Global Eq ex-US Index K	Mutual Funds	**		184,741
	State Street Target Retirement 2025 K	Mutual Funds	**		500,572
	State Street Target Retirement 2030 K	Mutual Funds	**		1,260,636
	State Street Target Retirement 2035 K	Mutual Funds	**		110,560
	State Street Target Retirement 2040 K	Mutual Funds	**		133,542
	State Street Target Retirement 2045 K	Mutual Funds	**		1,539,879
	State Street Target Retirement 2050 K	Mutual Funds	**		749,285
	State Street Target Retirement 2055 K	Mutual Funds	**		777,738
	State Street Target Retirement 2060 K	Mutual Funds	**		115,177
	State Street Target Retirement 2065 K	Mutual Funds	**		168,242
	State Street Target Retirement K	Mutual Funds	**		430,257
*	Western Asset Core Bond IS	Mutual Funds	**		117,166
*	State Street US Bond Index Non-Lending K	Collective Trust	**		493,639
*	Notes receivable from participants	4.25% - 9.50%			435,889
				$	21,219,812
*	Denotes party-in-interest.
**	Historical cost has not been presented since this investment is participant-directed.

	The accompanying notes are an integral part of this schedule.

FAIR VALUE MEASUREMENTS

12 Months Ended

Dec. 31, 2025

EBP 002 [Member]

EBP, Investment, Fair Value and NAV [Line Items]

FAIR VALUE MEASUREMENTS

The framework for measuring fair value provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (level 1 measurements) and the lowest priority to unobservable inputs (level 3 measurements). The three levels of the fair value hierarchy are described as follows:

Level 1 - Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that the Plan has the ability to access.

Level 2 - Inputs to the valuation methodology include: quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in inactive markets; inputs other than quoted prices that are observable for the asset or liability; inputs that are derived principally from or corroborated by observable market data by correlation or other means. If the asset or liability has a specified (contractual) term, the level 2 input must be observable for substantially the full term of the asset or liability.

Level 3 - Inputs to the valuation methodology are unobservable and insignificant to the fair value measurement.

The asset’s or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques used need to maximize the use of observable inputs and minimize the use of unobservable inputs.

Following is a description of the valuation methodologies used for assets measured at fair value.

Level 1 Fair Value Measurements

The fair value of the self-directed brokerage accounts, including common and preferred stock, unit investment trusts, employer stock and money market funds are based on quoted market prices. All investments are participant-directed.

Mutual funds are valued at the daily closing price as reported by the fund. Mutual funds held by the Plan are open-end mutual funds that are registered with the U.S. Securities and Exchange Commission. These funds are required to publish their daily net asset value and to transact at that price.

Level 2 Fair Value Measurements

Fixed annuities are valued at fair value by discounting the related cash flows based on current yields of similar instruments with comparable durations considering the credit-worthiness of the issuer. The fair value of the investment contract approximates contract value as of December 31, 2025 and 2024.

Investments Measured at NAV Practical Expedient

Collective trust funds are valued at their net asset value ("NAV") on the last day of the calendar year of the period; as a result, these investments are not classified within the fair value hierarchy. Collective funds are comprised of units in such collective trust funds that are not publicly traded. The underlying assets in these funds are valued where applicable on exchanges and price quotes for the assets held by these funds are readily available. When current market prices or quotations are not available, valuations are determined using valuation models adopted by the trustee or other inputs principally from or corroborated by observable market data. The Plan held collective trust funds at December 31, 2025 and 2024 as described below.

State Street Aggregate Bond Index Fund - Class K – The State Street Aggregate Bond Index Fund (the "fund") seeks to provide investment results that, before fees and expenses, correspond generally to the price and yield performance of an index that tracks the U.S. dollar denominated investment grade bond market over the long term. This fund is not FDIC-insured. There are no unfunded commitments and no withdrawal restrictions.

The following table sets forth by level, within the fair value hierarchy, the Plan’s assets at fair value as of December 31, 2025 and 2024.


	Assets at Fair Value as of December 31, 2025
	Level 1		Level 2		Level 3		Total

Mutual Funds	$	17,912,772	$	-	$	-	$	17,912,772
Fixed Annuities		-		278,082		-		278,082
Total		17,912,772		278,082		-		18,190,854

Self-directed brokerage accounts:
Common stock-employer stock		1,754,416		-		-		1,754,416
Self-directed brokerage accounts		345,014		-		-		345,014
Total self-directed brokerage accounts		2,099,430		-		-		2,099,430

Collective Trust Funds(a)								493,639

Total investments	$	20,012,202	$	278,082	$	-	$	20,783,923


	Assets at Fair Value as of December 31, 2024
	Level 1		Level 2		Level 3		Total

Mutual Funds	$	15,908,553	$	-	$	-	$	15,908,553
Fixed Annuities		-		457,782		-		457,782
Total		15,908,553		457,782		-		16,366,335

Self-directed brokerage accounts:
Common stock-employer stock		2,479,730		-		-		2,479,730
Self-directed brokerage accounts		761,621		-		-		761,621
Total self-directed brokerage accounts		3,241,351		-		-		3,241,351

Collective Trust Funds(a)								446,807

Total investments	$	19,149,904	$	457,782	$	-	$	20,054,493

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

- Definition

The entire disclosure for fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, fair value measured at net asset value per share as practical expedient (NAV).

+ References

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-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

+ Details

STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS - EBP 002 [Member] - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Investment income:
Net appreciation in fair value of investments	$ 1,578,290	$ 2,359,665
Dividend income	934,122	599,218
Total investment income	2,512,412	2,958,883
CONTRIBUTIONS:
Employer	903,661	886,244
Participants	1,014,988	1,062,826
Rollover	2,555	25,002
Interest income on notes receivable from participants	31,547	34,130
Total contributions	1,952,751	2,008,202
Total additions	4,465,163	4,967,085
DEDUCTIONS:
Benefits paid to participants	3,713,512	4,738,967
Administrative expenses	62,547	59,096
Total deductions	3,776,059	4,798,063
CHANGE IN NET ASSETS AVAILABLE FOR BENEFITS	689,104	169,022
NET ASSETS AVAILABLE FOR BENEFITS - beginning of year	20,546,987	20,377,965
NET ASSETS AVAILABLE FOR BENEFITS - end of year	$ 21,236,091	$ 20,546,987

FAIR VALUE MEASUREMENTS - Summary of Plan's Assets at Fair Value (Details) - EBP 002 [Member] - USD ($)

Dec. 31, 2025

Dec. 31, 2024

Document and Entity Information	12 Months Ended
Document and Entity Information	Dec. 31, 2025
Entity Listings [Line Items]
Document Type	11-K
Entity Central Index Key	0001609065
Entity Registrant Name	PATHFINDER BANCORP, INC.
Amendment Flag	false
EBP 002 [Member]
Entity Listings [Line Items]
Document Type	11-K
Document Period End Date	Dec. 31, 2025
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2025
Entity Central Index Key	0001609065
Entity Registrant Name	PATHFINDER BANCORP, INC.
Amendment Flag	false
Document Fiscal Period Focus	FY

TAX STATUS (Additional Information) (Details)	12 Months Ended
TAX STATUS (Additional Information) (Details)	Dec. 31, 2025
EBP 002 [Member]
EBP, Tax Status [Line Items]
Determination letter date	Jun. 30, 2020

PARTY-IN-INTEREST (Additional Information) (Details) - EBP 002 [Member] - Common stock - $ / shares	Dec. 31, 2025	Dec. 31, 2024
EBP, Related Party and Party-in-Interest Transactions [Line Items]
Number of shares or units of investment held by employee	124,338	145,353
Share price	$ 14.03	$ 17.06

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) - EBP 002 [Member]	12 Months Ended
	Dec. 31, 2025
EBP, Accounting Policy [Line Items]
Basis of Accounting	Basis of Accounting The financial statements of the Plan are prepared using the accrual method of accounting.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and changes therein, and disclosures of contingent assets and liabilities. Actual results could differ from those estimates, particularly given the economic disruptions and uncertainties associated with the current economy, and such differences, may be significant.
Notes Receivable from Participants	Notes Receivable from Participants Notes receivable from participants are measured at their unpaid principal balance plus any accrued but unpaid interest. Interest income is recorded on the accrual basis. Related fees are recorded as administrative expenses and are expensed when they are incurred. If a participant ceases to make loan repayments and the Plan Administrator deems the participant loan to be in default, the participant loan balance is reduced and a benefit payment is recorded based upon the terms of the Plan Document.
Investment Valuation and Income Recognition	Investment Valuation and Income Recognition The Plan’s investments are stated at fair value. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. See Note 3 for discussion of fair value measurements. Purchases and sales of securities are recorded on a trade-date basis. Interest income is recorded on the accrual basis. Dividends are recorded on the ex-dividend date. Net appreciation includes the Plan’s gains on investments bought and sold as well as held during the year. All investments are participant-directed.
Investment Fees	Investment Fees Net investment returns are reported in the net appreciation in fair value of investments and reflect certain fees paid by the various investment funds to their affiliated investment advisors, transfer agents, and others as further described in each fund prospectus or other published documents. These fees are deducted prior to allocation of the Plan’s investment earnings activity and thus not separately identifiable as an expense.
Payment of Benefits	Payment of Benefits Benefits are recorded when paid.
Plan Expenses	Plan Expenses The Plan Document states that at the discretion of the Plan’s sponsor, any administrative expenses can be paid by either the Plan or the Plan’s sponsor. For the years ended December 31, 2025 and 2024, administrative expenses totaling $62,547 and $59,096, respectively, were paid for by the Plan.

DESCRIPTION OF PLAN - Schedule of Vesting Percentage (Details) - EBP 002 [Member]	12 Months Ended
	Dec. 31, 2025
EBP, Description of Plan [Line Items]
1 year	20.00%
2 years	40.00%
3 years	60.00%
4 years	80.00%
5 or more years	100.00%

TAX STATUS	12 Months Ended
TAX STATUS	Dec. 31, 2025
EBP 002 [Member]
EBP, Tax Status [Line Items]
TAX STATUS	4. TAX STATUS The Plan is operating under a non-standardized prototype cash or deferred profit-sharing plan sponsored by Lifetime Benefit Solutions. The prototype plan obtained its latest determination letter on June 30, 2020, in which the Internal Revenue Service stated that the prototype plan, as then designed, was in compliance with the applicable requirements of the Internal Revenue Code. The Plan has been amended since receiving the determination letter. However, the Plan Administrator and its advisors believe that the Plan is currently designed and being operated in compliance with the applicable regulations of the Internal Revenue Code. Therefore, they believe that the Plan is qualified and the related trust is tax-exempt.

PLAN TERMINATION (Additional Information) (Details)	12 Months Ended
PLAN TERMINATION (Additional Information) (Details)	Dec. 31, 2025
EBP 002 [Member]
Employee Benefit Plan, Plan Termination [Line Items]
Plan Termination, Participants Vested	100.00%