Parent Company Only Financial Statements (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest income	$ 4,550	$ 4,631	$ 4,644	$ 4,913	$ 4,916	$ 5,012	$ 4,581	$ 4,404	$ 18,738	$ 18,913	$ 18,259
Income tax benefit	5,212	(3,238)	(411)	(1,415)	120	362	212	156	148	850	829
Net income (loss)	(5,696)	(6,161)	(715)	(2,676)	(6)	747	505	396	(15,248)	1,642	1,451
Parent Company [Member]
Interest income									167	152	141
Other income									0	0	0
Total income									167	152	141
Other expense									398	381	1,037
Loss before income tax and equity in undistributed net income of subsidiary									(231)	(229)	(896)
Income tax benefit									(14)	(78)	(54)
Loss before equity in undistributed net income of subsidiary									(217)	(151)	(842)
Equity in undistributed net income (loss) of subsidiary									(15,031)	1,793	2,293
Net income (loss)									$ (15,248)	$ 1,642	$ 1,451