Consolidated Statement of Comprehensive Income - Unaudited (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Consolidated Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 6,504	$ 145	$ 9,616	$ (1,531)
Other comprehensive income, before tax:
Unrealized holding gains on securities arising during the period	543	5,789	629	5,927
Unrealized holding gain on securities transferred from the held-to-maturity category into the available-for-sale category	8,509	0	8,509	0
Reclassification adjustment for gains included in net income	(8,797)	0	(9,006)	0
Income tax expense related to items of other comprehensive income	(89)	(1,967)	(46)	(2,015)
Other comprehensive income, net of tax	166	3,822	86	3,912
Comprehensive income	$ 6,670	$ 3,967	$ 9,702	$ 2,381