Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]
Net Income	$ 93,641	$ 385,721	$ 39,133
Other comprehensive income (loss):
Change in unrealized gains (losses) on investments and MBS available for sale	(64,849)	16,119	86,140
Realized net gains reclassified from other comprehensive income	0	(17,016)	(18,462)
Less deferred income tax benefit (provision)	23,994	494	(2,384)
Net other comprehensive income (loss)	(40,855)	(403)	65,294
Comprehensive income	$ 52,786	$ 385,318	$ 104,427