Income Taxes (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
Computed expected income tax expense (benefit) at statutory regulatory tax rate									$ 1,181	$ (6,926)	$ 2,930
Meals and entertainment									28	44	17
Tax exempt interest									(1,631)	(1,835)	(1,829)
Dividends received deduction									(111)	(99)	(172)
State taxes (net of federal benefit)									298	84	299
Other									(239)	(222)	(382)
Income tax (benefit) expense	504	1,350	(2,351)	23	94	602	(9,264)	(386)	(474)	(8,954)	863
Current income tax (benefit) expense									2,377	(6,059)	1,843
Deferred tax benefit									(2,851)	(2,895)	(980)
Income tax (benefit) expense	$ 504	$ 1,350	$ (2,351)	$ 23	$ 94	$ 602	$ (9,264)	$ (386)	$ (474)	$ (8,954)	$ 863