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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 179,129 $ 107,891
Marketable securities 164,562 377,718
Accounts receivable 51,232 44,065
Unbilled receivables 131,748 135,608
Inventories 6,164 8,482
Prepaids and other current assets 12,277 10,600
Total current assets 545,112 684,364
Intangible assets, net 57,634 58,420
Goodwill 279,793 278,810
Property, plant and equipment, net 54,965 56,035
Operating lease right-of-use assets 22,714 23,712
Deferred tax assets 3,986 4,047
Unbilled receivables 93,367 123,018
Other assets 3,304 4,240
Total assets 1,060,875 1,232,646
Current liabilities:    
Accounts payable 15,540 11,279
Accrued salaries and benefits 17,402 20,945
Convertible notes 73,860 163,687
Deferred revenue 20,624 24,755
Income taxes payable 21,015 20,607
Operating lease liabilities 5,854 5,992
Other current liabilities 14,107 20,002
Total current liabilities 168,402 267,267
Long-term operating lease liabilities 27,939 29,099
Long-term income taxes payable 16,681 21,424
Deferred tax liabilities 24,572 23,985
Other long-term liabilities 30,155 28,475
Total liabilities 267,749 370,250
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, 2022 and December 31, 2021 0 0
Common stock, $.001 par value: Authorized: 500,000,000 shares; Issued and outstanding: 110,235,608 shares at March 31, 2022 and 109,292,235 shares at December 31, 2021 110 109
Additional paid-in capital 1,272,353 1,298,966
Accumulated deficit (475,024) (435,227)
Accumulated other comprehensive loss (4,313) (1,452)
Total stockholders’ equity 793,126 862,396
Total liabilities and stockholders’ equity $ 1,060,875 $ 1,232,646