CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 4,511	$ 182,033	$ 10,265	$ 198,396
Other comprehensive income (loss):
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(2,704)	0	(8,903)	9
Unrealized gain (loss) on marketable securities, net of tax	(374)	13	(745)	40
Total comprehensive income (loss)	$ 1,433	$ 182,046	$ 617	$ 198,445