Consolidated Statements Of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net income	$ 13,291	$ 5,417
Other comprehensive income (loss):
Change in unrealized gains on investments and MBS available-for-sale	4,598	1,849
Realized net gains reclassified from other comprehensive income	(142)	(6,001)
Less deferred income tax provision	0	1,536
Net other comprehensive income (loss)	4,456	(2,616)
Comprehensive income	$ 17,747	$ 2,801