Mortgage Servicing Rights (Details Narrative) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Mortgage Servicing Rights Details Narrative
Unpaid principal balances of residential mortgage loans serviced for FHLB and FNMA	$ 269,554	$ 261,811

The unpaid principal balance of residential mortgage loans serviced by the company on behalf of FHLB and FNMA.

No definition available.

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