CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,518,131,000			$ 71,848,000
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred taxes	(1,487,154,000)			7,586,000
Depreciation and amortization	20,738,000			18,316,000
Non-cash operating lease cost	5,546,000			4,362,000
Impairments on equity investments	0			28,498,000
Impairments on long-lived assets	2,900,000			3,975,000
Gain from sale of equity method investment			$ (15,800,000)
Share-based Compensation	22,927,000			21,044,000
Equity in losses of investee	0			3,944,000
Other non-cash operating activities	12,566,000			5,101,000
Changes in assets and liabilities:
Accounts receivable	13,761,000			(42,743,000)
Inventories	(10,496,000)			(13,280,000)
Prepaid expenses and other assets	(37,244,000)			(35,033,000)
Accounts payable	(12,034,000)			1,470,000
Accrued and other long-term liabilities	(69,103,000)			(5,183,000)
Long-term income tax payable	6,354,000			4,808,000
Deferred revenues	22,892,000			42,494,000
Net cash provided by operating activities	9,784,000			117,207,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property, plant and equipment	(46,085,000)	$ (24,400,000)		(35,261,000)
Purchase of marketable securities	(5,341,000)			(125,823,000)
Proceeds from maturities of marketable securities	42,641,000			80,306,000
Proceeds from sales of marketable securities	278,817,000			8,727,000
Repayment on unsecured promissory note	4,419,000			0
Other investing activities	1,760,000			(2,367,000)
Net cash provided by (used in) investing activities	276,211,000			(74,418,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock	10,662,000			9,609,000
Common stock repurchases	0			(50,000,000)
Payroll taxes paid upon the vesting of equity awards	(45,395,000)			(50,181,000)
Proceeds from (Payments for) Other Financing Activities	0			(2,190,000)
Net cash used in financing activities	(34,733,000)			(92,762,000)
Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash	(11,007,000)			1,089,000
Net increase (decrease) in cash, cash equivalents, and restricted cash	240,255,000			(48,884,000)
Cash, cash equivalents, and restricted cash at beginning of the period	551,134,000		$ 588,682,000	637,566,000
Cash, cash equivalents, and restricted cash at end of the period	$ 791,389,000	$ 551,134,000		$ 588,682,000