SECURITIES (Details Narrative) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Securities Details Narrative
Securities Pledged as Collateral	$ 48,506	$ 56,659

The value of securities that serve as collateral for borrowings.

No definition available.

Name:	PSBQ_SecuritiesPledgedAsCollateral
Namespace Prefix:	PSBQ_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant