CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 50,852	$ 120,798
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	26,421	27,343
Non-cash interest expense	1,029	1,033
Amortization of premium (accretion of discount) on investments	(1,970)	1,652
Stock-based compensation	53,695	47,833
Gain on sale of nonfinancial assets, net	0	(108,000)
Loss on equity investment	12,650	0
Deferred income taxes	(6,360)	4,800
Unrealized foreign exchange loss (gain)	6,615	(6,887)
Non-cash changes in the fair value of contingent consideration	0	1,989
Other	(222)	700
Changes in operating assets and liabilities:
Accounts receivable, net	(138,796)	(54,813)
Inventory	(14,098)	1,125
Other current assets	(36,001)	(8,011)
Other assets	(323)	1,440
Accounts payable and other short-term liabilities	(31,686)	(78,143)
Other long-term liabilities	4,262	1,710
Net cash used in operating activities	(73,932)	(45,431)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(24,456)	(28,817)
Maturities and sales of investments	215,118	155,818
Purchases of investments	(220,364)	(147,361)
Proceeds from sale of nonfinancial assets	0	110,000
Purchase of intangible assets	(310)	(1,858)
Net cash provided by (used in) investing activities	(30,012)	87,782
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercises of awards under equity incentive plans	21,169	8,235
Taxes paid related to net share settlement of equity awards	(51,422)	(32,949)
Payments of contingent consideration	(9,475)	0
Principal repayments of financing leases	(1,014)	(566)
Net cash used in financing activities	(40,742)	(25,280)
Effect of exchange rate changes on cash	229	1,093
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(144,457)	18,164
Cash and cash equivalents:
Beginning of period	724,531	587,276
End of period	580,074	605,440
SUPPLEMENTAL CASH FLOW DISCLOSURES:
Cash paid for interest	1,437	1,422
Cash paid for income taxes	4,364	1,316
SUPPLEMENTAL CASH FLOW DISCLOSURES FOR NON-CASH INVESTING AND FINANCING ACTIVITIES:
Decrease in accounts payable and accrued liabilities related to fixed assets	(8,430)	(2,481)
Decrease in accounts payable and accrued liabilities related to intangible assets	$ (1,478)	$ (637)