Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income (loss)	$ (134,136)	$ 349,245	$ 284,373
Other comprehensive income (loss):
Net unrealized gains (losses) on securities available for sale	(391,590)	115,008	223,333
Net unrealized gains (losses) on interest rate hedges	120,684	(25,476)	(155,902)
Other comprehensive income (loss)	(270,906)	89,532	67,431
Comprehensive income (loss)	$ (405,042)	$ 438,777	$ 351,804