Loans (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Loans (Additional Textual) [Abstract]
Cash-basis interest income	$ 0	$ 0	$ 0	$ 0
Loans 90 days or more past due	0		0		0
Financing Receivable, Modifications, Recorded Investment	540,000		540,000		3,020,000
Allocated specific reserves to modified TDRs	915,000		915,000		897,000
Number of days of default payment			90 days
Investments	137,786,000		137,786,000		157,270,000
Non accrual loans	6,198,000		6,198,000		4,597,000
Principal repayment at the date of modification	50		50
Maturity date start			May 31, 2012
Maturity date end			Sep. 30, 2012
Increase in ALLL due to TDRs described	46,000		46,000
Single-family residential [Member]
Loans (Textual) [Abstract]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum			5.00%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum			10.00%
Previous maturity date of Receivables			2034
Maturity date of Receivables			2042
Reduction in stated interest rate of loan			30 years
Loans (Additional Textual) [Abstract]
Financing Receivable, Modifications, Recorded Investment	130,000		130,000
Investments	$ 17,710,000		$ 17,710,000		$ 18,214,000