Condensed Consolidated Statements of Comprehensive Income (Unuaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 83,463	$ 28,887
Available for sale securities:
Change in net unrealized gains	4,099	2,194
Less: reclassification adjustment for net (gains) losses included in net income	(22)	68
Net change (net of tax effect)	4,077	2,262
Cash flow hedges:
Change in unrealized gains (losses)	2,222	(5,691)
Less: reclassification adjustment for net losses included in net income	1,165	4,247
Net change (net of tax effect)	3,387	(1,444)
Other comprehensive income	7,464	818
Comprehensive income	$ 90,927	$ 29,705