Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net Income	$ 48,584	$ 8,788	$ 55,217
Other comprehensive income (loss), before tax:
Unrealized gain (loss) on derivative instruments	0	(22)	89
Unrealized gain (loss) on available-for-sale securities	(56)	(14)	(40)
Other comprehensive income (loss), before tax	(56)	(36)	49
Tax benefit (expense) related to items of other comprehensive income	21	5	16
Other comprehensive income (loss), net of tax	(35)	(31)	65
Comprehensive income	$ 48,549	$ 8,757	$ 55,282