UNAUDITED 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	$ 45,139	$ 54,871
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,689	5,755
Amortization of issuance cost	756
Coupon interest expense	863
Loss on disposal and abandonment of intangible assets	10	40
Loss on disposal and impairment of property, equipment, and other assets, net	146	106
Unrealized gains on strategic investments and marketable securities, net	(15,570)	(55,851)
Stock-based compensation	34,350	25,088
Deferred income taxes	(9,660)	18,029
Unrecognized tax benefits	855	1,365
Bond amortization	(3,890)	159
Noncash lease expense	1,395	1,556
Provision for expected credit losses	28	228
Change in assets and liabilities:
Accounts and notes receivable and contract assets	(50,431)	7,495
Inventory	(15,811)	(14,260)
Prepaid expenses and other assets	(64,348)	(7,074)
Accounts payable, accrued and other liabilities	(37,043)	(9,580)
Deferred revenue	50,199	16,037
Net cash provided by (used in) operating activities	(56,323)	43,964
Cash flows from investing activities:
Purchases of investments	(145,124)
Proceeds from call / maturity of investments	81,088	7,200
Purchases of property and equipment	(8,513)	(17,098)
Proceeds from disposal of property and equipment		87
Purchases of intangible assets	(125)	(37)
Strategic investments		(500)
Net cash used in investing activities	(72,674)	(10,348)
Cash flows from financing activities:
Net proceeds from equity offering	33,650	(71)
Proceeds from options exercised	39,181
Income and payroll tax payments for net-settled stock awards	(34,841)	(1,388)
Net cash provided by (used in) financing activities	37,990	(1,459)
Effect of exchange rate changes on cash and cash equivalents	779	(157)
Net increase (decrease) in cash and cash equivalents	(90,228)	32,000
Cash and cash equivalents and restricted cash, beginning of period	355,552	356,438
Cash and cash equivalents and restricted cash, end of period	$ 265,324	$ 388,438