Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
NET LOSS	$ (173,205)	$ (96,670)	$ (739,561)	$ (1,667,016)
Net unrealized gain on securities, net of tax:
Unrealized gain arising during the period		188		333
Less: reclassification adjustments for (gain) loss realized in net loss	0	0	0	0
Net unrealized gain (loss) on securities	0	188	0	333
Net unrealized gain (loss) on foreign currency:
Foreign currency translation gain (loss) arising during the period	4,735	9,941	(7,033)	35,415
Less: reclassification adjustments for loss realized in net loss	0	29,325	0	29,325
Foreign currency translation gain (loss)	4,735	39,266	(7,033)	64,740
OTHER COMPREHENSIVE INCOME (LOSS)	4,735	39,454	(7,033)	65,073
COMPREHENSIVE LOSS	$ (168,470)	$ (57,216)	$ (746,594)	$ (1,601,943)