Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
NET LOSS	$ (13,183)	$ (92,802)	$ (60,042)	$ (174,416)
Other comprehensive income (loss):
Foreign currency translation income (loss)	(215)	934	1,018	1,466
COMPREHENSIVE LOSS	$ (13,398)	$ (91,868)	$ (59,024)	$ (172,950)