Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Statement [Abstract]
Unrealized gain on securities available-for-sale	$ 6,890	$ 3,674	$ 4,671
Unrealized gain/(loss) on interest rate caps	(145)	(522)	81
Reclassification adjustment for impairments realized in net income	728	1,387	749
Reclassification adjustments for gains included in net income	(5,672)	(1,022)	(2,014)
Other comprehensive income, before tax	1,801	3,517	3,487
Income tax expense related to items of other comprehensive income	(685)	(1,455)	(1,278)
Other comprehensive income, net of tax	1,116	2,062	2,209
Net income	9,274	23,383	1,410
Comprehensive income	$ 10,390	$ 25,445	$ 3,619