CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net earnings (loss)	$ 56,801		$ 50,704	$ (62,016)
Other comprehensive income (loss) related to unrealized gains and losses on securities available-for-sale:
Unrealized holding gains arising during the period	17,532		32,473	6,149
Income tax expense related to unrealized holding gains arising during the period	(7,363)		(13,639)	(2,583)
Reclassification adjustment for net (gains) losses included in net earnings	(124)	[1]		874	[1]
Income tax expense (benefit) related to reclassification adjustment	52			(367)
Other comprehensive income	10,097		18,834	4,073
COMPREHENSIVE INCOME (LOSS)	$ 66,898		$ 69,538	$ (57,943)

[1] The 2012 reclassification adjustment includes a $1.2 million gain on sale of securities, net of a $1.1 million other-than-temporary impairment loss on a covered security. The 2010 reclassification adjustment represents an other-than-temporary impairment loss on a covered security.