Premises and Equipment (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Premises and Equipment (Textual) [Abstract]
Depreciation expense	$ 1,600,000	$ 1,700,000	$ 2,000,000
Rent expense	$ 779,000	$ 719,000	$ 710,000