Stock-Based Compensation (Details 1) (Restricted Stock [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2014
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2014	$ 166
2015	157
2016	162
2017	122
2018	82
Thereafter	40
Totals	$ 729

Share based compensation expense due in remainder of fiscal year.

No definition available.

Name:	psbq_ShareBasedCompensationExpenseDueInRemainderOfFiscalYear
Namespace Prefix:	psbq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant