Investment Securities - Gross Realized Gains (Losses) on Sale and Redemptions of Securities (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Gain (Loss) on Sale of Investments [Abstract]
Realized gains on investments	$ 36	$ 51	$ 36	$ 58
Realized losses on investments	0	0	6	7
Total	$ (36)	$ 51	$ 30	$ 51

The net realized loss on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

No definition available.

Name:	pbhc_RealizedLossesOnSaleOfInvestments
Namespace Prefix:	pbhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration