CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows provided by operating activities:
Net income	$ 42,248	$ 17,975
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	5,004	3,870
Amortization of intangible assets	2,321	1,971
Amortization of premium and accretion of discount on available-for-sale marketable securities, net	120	(59)
Stock-based compensation expenses	12,773	9,704
Deferred income tax benefit, net	(2,859)	(973)
Other expenses, net	235	186
Changes in assets and liabilities:
Inventories, net	(29,004)	964
Prepaid expenses and other assets	49,888	10,885
Trade receivables, net	59,420	(7,379)
Operating lease right-of-use assets and liabilities, net and effect of exchange rate differences	(1,247)	828
Trade payables, net	(17,589)	(21,720)
Employees and payroll accruals	11,821	3,250
Warranty obligations	13,809	14,947
Deferred revenues and customers advances	(31,729)	1,730
Other liabilities	(7,466)	20,271
Net cash provided by operating activities	107,745	56,450
Cash flows from investing activities:
Proceeds from sales and maturities of available-for-sale marketable securities	42,333	44,575
Purchase of property, plant and equipment	(27,053)	(10,620)
Investment in available-for-sale marketable securities	(31,924)	(15,316)
Withdrawal from (investment in) bank deposits	(3,316)	3,813
Withdrawal from (investment in) restricted bank deposits	36	(182)
Business combination, net of cash acquired		(39,315)
Net cash used in investing activities	(19,924)	(17,045)
Cash flows from financing activities:
Repayment of bank loans	(15,232)	(1,003)
Proceeds from bank loans	15,295	51
Proceeds from issuance of shares under stock purchase plan and upon exercise of stock-based awards	3,308	309
Change in non-controlling interests		(1,987)
Other financing activities	(56)
Net cash provided by (used in) financing activities	3,315	(2,630)
Increase in cash, cash equivalents and restricted cash	91,136	36,775
Cash, cash equivalents and restricted cash at the beginning of the period	223,901	187,764
Effect of exchange rate differences on cash, cash equivalents and restricted cash	9,035	1,939
Cash, cash equivalents and restricted cash at the end of the period	324,072	226,478
Supplemental disclosure of non-cash activities:
Operating lease, right of use asset	$ 2,158	$ 32,531