CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows provided by operating activities:
Net income	$ 122,667	$ 92,612
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	16,376	12,532
Amortization of intangible assets	7,081	7,514
Amortization of debt discount and debt issuance costs	168
Amortization of premium and accretion of discount on available-for-sale marketable securities, net	602
Stock-based compensation expenses	42,993	38,685
Deferred income tax benefit, net	(5,263)	(4,923)
Other adjustments, net	224	657
Changes in assets and liabilities:
Inventories, net	(121,999)	15,746
Prepaid expenses and other assets	37,871	(19,795)
Trade receivables, net	118,044	(114,572)
Operating lease right-of-use assets and liabilities, net and effect of exchange rate differences	(459)	2,138
Trade payables, net	(35,499)	21,301
Employees and payroll accruals	3,132	15,329
Warranty obligations	23,155	49,633
Deferred revenues and customers advances	(24,283)	19,516
Other liabilities	10,619	39,561
Net cash provided by operating activities	195,429	175,934
Cash flows from investing activities:
Proceeds from sales and maturities of available-for-sale marketable securities	116,419	119,570
Purchase of property, plant and equipment	(90,553)	(39,679)
Investment in available-for-sale marketable securities	(36,781)	(103,711)
Withdrawal from (investment in) restricted bank deposits	25,538	(243)
Business combination, net of cash acquired		(38,435)
Withdrawal from (investment in) bank deposits	(14,667)	4,101
Other investing activities	743
Net cash provided by (used in) in investing activities	699	(58,397)
Cash flows from financing activities:
Proceeds from issuance of convertible senior notes, net	618,269
Repayment of bank loans	(15,194)	(5,142)
Proceeds from bank loans	15,185	232
Proceeds from issuance of shares under stock purchase plan and upon exercise of stock-based awards	19,205	4,940
Change in non-controlling interests		(67,089)
Other financing activities	(152)	(1,248)
Net cash provided by (used in) financing activities	637,313	(68,307)
Increase in cash and cash equivalents	833,441	49,230
Cash and cash equivalents at the beginning of the period	223,901	187,764
Effect of exchange rate differences on cash and cash equivalents	(9,233)	10,348
Cash and cash equivalents at the end of the period	1,048,109	247,342
Supplemental disclosure of non-cash activities:
Purchase of property, plant and equipment	10,438
Operating lease, right of use asset	$ 796	$ 36,174