Securities (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of structured pooled trust preferred securities
Adjusted Amortized Cost	$ 800
Unrealized Gain (Loss)	(200)
Fair Value	600
Credit Losses Realized in Earnings		398	2,241
ALESCO Preferred Funding V, Ltd [Member]
Summary of structured pooled trust preferred securities
Adjusted Amortized Cost	800
Unrealized Gain (Loss)	(200)
Fair Value	600
Credit Losses Realized in Earnings			440
ALESCO Preferred Funding XII, Ltd [Member]
Summary of structured pooled trust preferred securities
Adjusted Amortized Cost
Unrealized Gain (Loss)
Fair Value
Credit Losses Realized in Earnings		280	933
ALESCO Preferred Funding XVII, Ltd [Member]
Summary of structured pooled trust preferred securities
Adjusted Amortized Cost
Unrealized Gain (Loss)
Fair Value
Credit Losses Realized in Earnings
Preferred Term Securities XVI, Ltd [Member]
Summary of structured pooled trust preferred securities
Adjusted Amortized Cost
Unrealized Gain (Loss)
Fair Value
Credit Losses Realized in Earnings		118	868
US Capital Funding VI, Ltd. [Member]
Summary of structured pooled trust preferred securities
Adjusted Amortized Cost
Unrealized Gain (Loss)
Fair Value
Credit Losses Realized in Earnings