Noninterest Income and Expenses (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012
Components of noninterest expense
Base salaries, net of deferred loan origination costs	$ 8,348				$ 8,159
Incentive compensation	1,286				1,375
Benefits and other compensation costs	3,327				3,228
Total salaries and benefits expense	12,961				12,762
Occupancy	1,659				1,716
Equipment	1,034				1,117
Data processing and software	1,078				1,294
ATM network charges	496				567
Telecommunications	525				555
Postage	231				256
Courier service	167				189
Advertising	325				498
Assessments	606				606
Operational losses	117				116
Professional fees	486				423
Foreclosed assets expense	99				525
Provision for foreclosed asset losses	27				83
Change in reserve for unfunded commitments	(440)				(190)
Intangible amortization	52				53
Other	2,178				2,345
Total other noninterest expense	8,640				10,153
Total noninterest expense	$ 21,601	$ 25,126	$ 25,590	$ 24,367	$ 22,915