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Consolidated Statements of Changes in Stockholders' Equity (Deficit) - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Loss [Member]
Accumulated Deficit [Member]
Noncontrolling Interests [Member]
Noncontrolling Interests [Member]
Redeemable Preferred Stock Member
Balance at Dec. 31, 2020 $ 441,449 $ 914 $ 1,399,774 $ (4,499) $ (974,011) $ 19,271 $ 0
Balance, Shares at Dec. 31, 2020   91,440,633          
Net loss (290,023) $ 0 0 0 (290,023) 0 0
Change in unrealized gain or loss on investments (899) 0 0 (899) 0 0 0
Foreign currency translation adjustments 1,235 0 0 1,235 0 0 0
Shares issued from stock plans, net of payroll taxes paid 5,494 $ 15 5,479 0 0 0 0
Shares issued from stock plans, net of payroll taxes paid, Shares   1,439,900          
Stock-based compensation 71,161 $ 0 71,161 0 0 0 0
Conversion of subsidiary's convertible note payable(Note 13) 696 0 0 0 0 696 0
Balance at Dec. 31, 2021 229,113 $ 929 1,476,414 (4,163) (1,264,034) 19,967 0
Balance, Shares at Dec. 31, 2021   92,880,533          
Net loss (293,654) $ 0 0 0 (293,654) 0 0
Change in unrealized gain or loss on investments (1,632) 0 0 (1,632) 0 0 0
Foreign currency translation adjustments 75 0 0 75 0 0 0
Shares issued from stock plans, net of payroll taxes paid (983) $ 13 (996) 0 0 0 0
Shares issued from stock plans, net of payroll taxes paid, Shares   1,285,553          
Stock-based compensation 65,601 $ 0 65,601 0 0 0 0
Balance at Dec. 31, 2022 (1,480) $ 942 1,541,019 (5,720) (1,557,688) 19,967 0
Balance, Shares at Dec. 31, 2022   94,166,086          
Net loss $ (284,232) $ 0 $ 0 $ 0 $ (284,232) $ 0 $ 0
Consolidation of Fortis (Note 4) 520,000 0 0 0 0 520,000 21,480,000
Change in unrealized gain or loss on investments $ 2,557 $ 0 $ 0 $ 2,557 $ 0 $ 0 $ 0
Foreign currency translation adjustments (3,712) 0 0 (3,712) 0 0 0
Issuance of common stock under ATM Program 48,407 $ 24 48,383 0 0 0 0
Issuance of common stock under ATM Program shares   2,472,090          
Shares issued from stock plans, net of payroll taxes paid 3,494 $ 22 3,472 0 0 0 0
Shares issued from stock plans, net of payroll taxes paid, Shares   2,132,071          
Stock-based compensation 50,767 $ 0 50,767 0 0 0 0
Balance at Dec. 31, 2023 $ (183,679) $ 988 $ 1,643,641 $ (6,875) $ (1,841,920) $ 20,487 $ 21,480
Balance, Shares at Dec. 31, 2023   98,770,247