CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income	$ 32,898	$ 3,281
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	9,496	13,063
Depreciation	7,723	8,874
Amortization of intangible assets	3,251	3,944
Deferred income taxes	(4,252)	2,102
Change in fair value of earn-out liability	700	6,900
Other	39	605
Change in operating assets and liabilities:
Accounts receivable	(4,006)	(4,039)
Unbilled receivables	12,831	37,937
Prepaids and other current assets	528	(2,895)
Inventories	(11,445)	(5,280)
Income taxes receivable	(5,158)	(390)
Accounts payable	4,072	(8,805)
Accrued salaries and benefits and other liabilities	(10,327)	(7,547)
Income taxes payable	5,431	(4,396)
Deferred revenue	(913)	(2,759)
Operating lease liabilities	(1,749)	(1,689)
Net cash provided by operating activities	39,119	38,906
Cash flows from investing activities:
Purchases of property, plant, and equipment	(3,008)	(7,738)
Purchases of marketable securities	(112,547)	(45,561)
Maturities of marketable securities	100,717	18,134
Proceeds from sales of marketable securities	63,412	24,460
Proceeds from sale of non-marketable equity security	22,796	0
Net cash provided by (used in) investing activities	71,370	(10,705)
Cash flows from financing activities:
Proceeds received from issuance of common stock under employee stock plans	220	771
Payments of taxes on restricted stock units	(37,724)	(30,676)
Payments under installment payment arrangements	(4,031)	(3,227)
Payments for settlement and repurchase of convertible senior notes	0	(10,381)
Payments for settlement of warrants	0	(10,697)
Repurchase and retirement of common stock	(50,812)	0
Net cash used in financing activities	(92,347)	(54,210)
Effect of exchange rate changes on cash and cash equivalents	(295)	191
Net increase (decrease) in cash and cash equivalents	17,847	(25,818)
Cash, cash equivalents and restricted cash at beginning of period	94,767	125,694
Cash, cash equivalents and restricted cash at end of period	112,614	99,876
Non-cash operating, investing and financing activities:
Property, plant and equipment received and accrued in accounts payable and other liabilities (Cumulative amounts of $22.6 million and $37.5 million as of March 31 2024 and 2023, respectively)	3,696	4,252
Operating lease right-of-use assets obtained in exchange for operating lease obligations	1,662	0
Issuance of common stock in connection with the payment of year 1 earn-out related to the PLDA Group acquisition	$ 0	$ 5,022