Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 23,504	$ 19,376	$ 45,956	$ 2,502
Other comprehensive income (loss):
Unrealized net holding gains (losses) on investment securities available for sale, net of taxes of $(8,360), $6,121, $(9,389) and $(501), respectively	13,297	(9,747)	14,938	799
Reclassification adjustment for realized (gains) losses on investment securities available for sale included in net income, net of taxes of $153, $456, $428 and $879, respectively	(241)	(727)	(679)	(1,400)
Total other comprehensive income (loss)	13,056	(10,474)	14,259	(601)
Total comprehensive income (loss)	$ 36,560	$ 8,902	$ 60,215	$ 1,901