CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 112,614	$ 94,767
Marketable securities	278,443	331,077
Accounts receivable	86,940	82,925
Unbilled receivables	38,484	50,872
Inventories	47,599	36,154
Prepaids and other current assets	12,376	34,850
Total current assets	576,456	630,645
Intangible assets, net	25,518	28,769
Goodwill	286,812	286,812
Property, plant and equipment, net	67,277	67,808
Operating lease right-of-use assets	21,574	21,497
Unbilled receivables	3,980	4,423
Deferred tax assets	131,885	127,892
Income taxes receivable	93,926	88,768
Other assets	1,408	1,613
Total assets	1,208,836	1,258,227
Current liabilities:
Accounts payable	24,775	18,074
Accrued salaries and benefits	12,687	17,504
Deferred revenue	16,399	17,393
Income taxes payable	3,899	5,099
Operating lease liabilities	4,722	4,453
Other current liabilities	20,125	26,598
Total current liabilities	82,607	89,121
Long-term operating lease liabilities	25,899	26,255
Long-term income taxes payable	85,569	78,947
Deferred tax liabilities	4,205	4,462
Other long-term liabilities	18,964	21,341
Total liabilities	217,244	220,126
Commitments and contingencies (Notes 9, 11 and 15)
Stockholders’ equity:
Convertible preferred stock, $.001 par value: Authorized: 5,000,000 shares; Issued and outstanding: no shares at March 31, 2024 and December 31, 2023	0	0
Common stock, $.001 par value: Authorized: 500,000,000 shares; Issued and outstanding: 107,780,744 shares at March 31, 2024 and 107,853,778 shares at December 31, 2023	108	108
Additional paid-in capital	1,293,923	1,324,796
Accumulated deficit	(300,583)	(285,534)
Accumulated other comprehensive loss	(1,856)	(1,269)
Total stockholders’ equity	991,592	1,038,101
Total liabilities and stockholders’ equity	$ 1,208,836	$ 1,258,227