OTHER CONSOLIDATED BALANCE SHEET COMPONENTS (CURRENT) - Other Current Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Short term investment in marketable equity security	$ 328,384	$ 0
Inventory, net	63,825	61,129
Restricted cash	32,891	30,279	$ 34,315
Processing costs receivable	203,837	148,606
Prepaid expenses	53,879	34,279
Accounts receivable, net	60,201	41,960
Other	80,589	66,814
Total	823,606	$ 383,067
Short term investment in marketable security, loss on sale	$ 28,900