Federal Home Loan Bank Advances (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Deposits\Federal Home Loan Bank Advances [Abstract]
FHLB public unit deposit letters of credit outstanding	$ 2,458	$ 6,920
Federal Home Loan Bank stock (at cost)	2,556	2,556
Maximum line of credit - FHLB advances	101,553
Residential real estate mortgage collateral pledged to FHLB line of credit advances	175,707
Available and unused portion of FHLB line of credit advances	81,282
Current agreement with FHLB, additional borrowing capacity by pledging securities	57,599
FHLB advances drawn which rquire additional purchases of FHLB capital stock	$ 51,120
Federal Home Loan Bank, Description	PSB may draw upon an FHLB open line of credit or provide public unit deposit letters of credit up to approximately 65% of unencumbered one- to four-family residential first mortgage loans and 40% of residential junior mortgage loans pledged as collateral out of its portfolio.