Fair Value Measurements and Disclosures - Summary of Fair Value Assets Measured on Nonrecurring Basis (Details) - Nonrecurring Basis [Member] - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Total Fair Value [Member]
Nonrecurring basis [Abstract]
Impaired loans	$ 4,182	$ 14,701
Level 3 [Member]
Nonrecurring basis [Abstract]
Impaired loans	$ 4,182	$ 14,701

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents impaired loans as presented on the statement of financial position which may include mortgage loans, finance receivables, or any other impaired loans which are due to the Company as of the balance sheet date.

No definition available.

Name:	pbhc_ImpairedLoansFairValueDisclosure
Namespace Prefix:	pbhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant