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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Current assets:    
Cash and cash equivalents $ 107,891 $ 128,967
Marketable securities 377,718 373,682
Accounts receivable 44,065 27,903
Unbilled receivables 135,608 138,813
Inventories 8,482 14,466
Prepaids and other current assets 10,600 15,881
Total current assets 684,364 699,712
Intangible assets, net 58,420 36,487
Goodwill 278,810 183,222
Property, plant and equipment, net 56,035 57,693
Operating lease right-of-use assets 23,712 28,708
Deferred tax assets 4,047 4,353
Unbilled receivables 123,018 236,699
Other assets 4,240 4,535
Total assets 1,232,646 1,251,409
Current liabilities:    
Accounts payable 11,279 8,993
Accrued salaries and benefits 20,945 23,326
Convertible notes 163,687 0
Deferred revenue 24,755 10,198
Income taxes payable 20,607 20,064
Operating lease liabilities 5,992 4,724
Other current liabilities 20,002 18,559
Total current liabilities 267,267 85,864
Convertible notes 0 156,031
Long-term operating lease liabilities 29,099 34,305
Long-term income taxes payable 21,424 41,333
Deferred tax liabilities 23,985 14,276
Other long-term liabilities 28,475 6,894
Total liabilities 370,250 338,703
Commitments and contingencies (Notes 10, 13 and 20)
Stockholders’ equity:    
Convertible preferred stock, $.001 par value: Authorized: 5,000,000 shares; Issued and outstanding: no shares at December 31, 2021 and December 31, 2020 0 0
Common Stock, $.001 par value: Authorized: 500,000,000 shares; Issued and outstanding: 109,292,235 shares at December 31, 2021 and 111,697,994 shares at December 31, 2020 109 112
Additional paid in capital 1,298,966 1,270,426
Accumulated deficit (435,227) (357,751)
Accumulated other comprehensive loss (1,452) (81)
Total stockholders’ equity 862,396 912,706
Total liabilities and stockholders’ equity $ 1,232,646 $ 1,251,409