Guarantees (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Guarantees [Abstract]
Standby Letters Of Credit	$ 2

An irrevocable undertaking (typically by a financial institution) to guarantee payment of a specified financial obligation.

No definition available.

Name:	pbhc_StandbyLettersOfCredit
Namespace Prefix:	pbhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant