Condensed Consolidated Statements Of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 1,629	$ (1,533)	$ 34,599	$ 24,150
Other comprehensive income (loss):
Foreign currency gain (loss), net	4,124	(140)	11,589	6,531
Total comprehensive income (loss)	$ 5,753	$ (1,673)	$ 46,188	$ 30,681