CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Condensed Consolidated Statements of Comprehensive Income
Net income (loss)	$ (596)	$ 33,258	$ (8,123)	$ 46,162
Unrealized gains (losses) on securities:
Holding gains (losses) arising during period, net of tax	215	(396)	1,147	(327)
Reclassification adjustment for gains (losses) included in net income (loss)		(3)		(4)
Net unrealized gains (losses) on securities	215	(399)	1,147	(331)
Total comprehensive income (loss)	$ (381)	$ 32,859	$ (6,976)	$ 45,831