Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statements of Comprehensive Income
Net income (loss)	$ 64,585	$ (13,853)	$ 59,354
Other comprehensive income (loss), net of tax:
Unrealized holding gains or (losses) during the period, net of income tax expense (benefit) of $1,611 , ($6,761), and $6,269.	2,992	(12,556)	11,643
Reclassification adjustment for (losses) or gains included in net income, net of income tax (expense) benefit of ($1,945), $164 , and ($69).	(3,613)	305	(128)
Unrealized (losses) or gains on securities available for sale	(621)	(12,251)	11,515
Comprehensive income (loss)	$ 63,964	$ (26,104)	$ 70,869