BALANCE SHEET COMPONENTS (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018	Jun. 30, 2018
Accounts receivable, net:
Accounts receivable, gross	$ 209,851		$ 156,525
Less: unearned distribution price adjustments allowance	(9,000)		(5,400)
Less: allowance for doubtful accounts	(500)		(500)
Accounts receivable, net	200,351		150,625
Inventories:
Raw materials	19,331		19,391
Work-in-process	32,580		39,425
Finished goods	37,739		45,565
Inventories	89,650		104,381
Property and equipment, net:
Property and equipment, gross	241,448		228,444
Less: Accumulated depreciation and amortization	(133,306)		(123,110)
Property and equipment, net	108,142		105,334
Other long-term assets:
Right of use assets	62,376
Deferred taxes	50,660		50,660
Equity investments in privately-held companies	35,496		40,300
Long-term restricted cash	0		7,884	$ 7,931
Severance assets	5,428		17,043
Other	5,560		2,295
Deferred taxes and other long-term assets	159,520	$ 187,284	118,182
Accrued and other liabilities:
Payroll and related expenses	68,965		76,788
Accrued expenses	31,227		28,821
Lease liability, current	17,706
Intangible asset financings	5,379		4,488
Other	18,969		11,781
Accrued and other liabilities	142,246		121,878
Other long-term liabilities:
Lease liability, long term	51,490
Income tax payable	36,211		25,600
Accrued severance	6,778		21,645
Deferred rent	0		2,532
Other	5,614		4,336
Other long-term liabilities	100,093	$ 106,597	54,113
Computer, equipment, and software
Property and equipment, net:
Property and equipment, gross	189,505		180,125
Furniture and fixtures
Property and equipment, net:
Property and equipment, gross	1,886		2,140
Leasehold improvements
Property and equipment, net:
Property and equipment, gross	$ 50,057		$ 46,179