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Document and Entity Information	12 Months Ended
	Dec. 31, 2024
Cover [Abstract]
Central Index Key	0001609065
Amendment Flag	false
Document Type	DEF 14A
Entity Registrant Name	PATHFINDER BANCORP, INC.

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Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

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Cover page.

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- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2

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The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Exchange Act
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