Premises and Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 53,800	$ 53,539
Accumulated depreciation and amortization	24,130	22,822
Total	29,670	30,717
Depreciation Expense	2,500	2,500	1,800
Land
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	5,966	5,966
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	28,797	28,499
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	15,898	15,407
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,094	3,083
Construction in progress
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 45	$ 584