Fair Value (Details Textual) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Fair Value Inputs Weighted Average Discount Rate	26.97%		26.97%
Fair Value Assumptions Interest Rate Spread			300bps
Recorded Investment	$ 32,885,000		$ 32,885,000		$ 40,306,000
Allowances For Loans Losses Allocated	3,023,000		3,023,000		3,661,000
Provision for loan losses	851,000	971,000	3,301,000	2,692,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate			3.39%
Collateralized Debt Obligations [Member]
Impaired Financing Receivable Recorded Investment Including Interest Income	32,900,000		32,900,000
Recorded Investment	18,800,000		18,800,000
Allowances For Loans Losses Allocated	3,000,000		3,000,000
Provision for loan losses	$ 1,300,000	$ 601,000	$ 3,400,000	$ 1,600,000
Maximum [Member]
Fair Value Inputs, Probability Of Default			100.00%
Fair Value Inputs, Discount Rate			36.28%
Minimum [Member]
Fair Value Inputs, Probability Of Default			0.40%
Fair Value Inputs, Discount Rate			11.01%