Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net income	$ 16,798	$ 67,239
Other comprehensive income:
Net unrealized gains (losses) on securities available for sale	34,138	(18,852)
Net unrealized gains on derivative instruments	32,467	25,046
Other comprehensive income	66,605	6,194
Comprehensive income	$ 83,403	$ 73,433