ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Accrued compensation	$ 27,652	$ 17,725
Accrued sales and marketing	6,057	3,458
Accrued tax liabilities	4,785	32,617
Accrued cost of revenue	5,397	3,022
Other accrued expenses	14,673	16,843
Total accrued liabilities	$ 58,564	$ 73,665	[1]

[1] As of January 1, 2018, the Company adopted Accounting Standards Update 2014-09, "Revenue from Contracts with Customers (Topic 606)" ("ASC 606"), using the full retrospective method. Accordingly, the Company has recast certain amounts in the prior period presented. See Note 1 below for additional discussion.