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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 171,460 $ 107,891
Marketable securities 180,175 377,718
Accounts receivable 63,602 44,065
Unbilled receivables 146,692 135,608
Inventories 9,238 8,482
Prepaids and other current assets 9,979 10,600
Total current assets 581,146 684,364
Intangible assets, net 58,866 58,420
Goodwill 291,995 278,810
Property, plant and equipment, net 81,735 56,035
Operating lease right-of-use assets 26,343 23,712
Deferred tax assets 2,686 4,047
Unbilled receivables 65,211 123,018
Other assets 2,931 4,240
Total assets 1,110,913 1,232,646
Current liabilities:    
Accounts payable 20,183 11,279
Accrued salaries and benefits 20,689 20,945
Convertible notes 49,248 163,687
Deferred revenue 22,165 24,755
Income taxes payable 20,846 20,607
Operating lease liabilities 5,873 5,992
Other current liabilities 22,440 20,002
Total current liabilities 161,444 267,267
Long-term operating lease liabilities 31,219 29,099
Long-term income taxes payable 12,220 21,424
Deferred tax liabilities 25,159 23,985
Other long-term liabilities 42,713 28,475
Total liabilities 272,755 370,250
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 June 30, 2022 and December 31, 2021 0 0
Common stock, $.001 par value: Authorized: 500,000,000 shares; Issued and outstanding: 110,528,531 shares at June 30, 2022 and 109,292,235 shares at December 31, 2021 111 109
Additional paid-in capital 1,283,789 1,298,966
Accumulated deficit (440,004) (435,227)
Accumulated other comprehensive loss (5,738) (1,452)
Total stockholders’ equity 838,158 862,396
Total liabilities and stockholders’ equity $ 1,110,913 $ 1,232,646