OTHER CONSOLIDATED BALANCE SHEET COMPONENTS (CURRENT) - Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Inventory, net	$ 47,683	$ 28,627
Restricted cash	38,873	33,838
Processing costs receivable	67,281	46,102
Prepaid expenses	22,758	21,782
Accounts receivable, net	33,863	22,393
Other	39,951	46,062
Total	$ 250,409	$ 198,804