CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 94	$ 36,769
Other comprehensive loss, net of tax:
Foreign currency translation adjustments	7,859	(1,266)
Total comprehensive income	$ 7,953	$ 35,503