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Condensed Consolidated Statements of Stockholders' Deficit - USD ($)
shares in Thousands, $ in Thousands
Total
2025 Notes
2022 Notes
Common shares
Preferred Stock
Common Stock
Common Stock
2025 Notes
Common Stock
Common shares
Additional Paid-in Capital
Additional Paid-in Capital
2025 Notes
Additional Paid-in Capital
2022 Notes
Additional Paid-in Capital
Common shares
Accumulated Deficit
Accumulated Other Comprehensive Income (Loss)
Noncontrolling Interests
Beginning balance (shares) at Dec. 31, 2020         35 99,399                  
Beginning balance at Dec. 31, 2020 $ (27,899)       $ 0 $ 99     $ 711,487       $ (732,422) $ (6,972) $ (91)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                              
Net income (loss) (30,001)                       (30,215)   214
Foreign currency translation adjustment 693                         693  
Exercise of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan (shares)           1,765                  
Exercise of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan 2,844         $ 2     2,842            
Taxes withheld on net settled vesting of restricted stock units (825)               (825)            
Issuance of common shares in connection with conversion of notes (shares)             429                
Issuance of common shares in connection with conversion of notes   $ 5,383         $ 1     $ 5,382          
Issuance of shares (shares)               1,516              
Issuance of shares       $ 29,369       $ 1       $ 29,368      
Share-based compensation 11,405               11,405            
Series E preferred stock dividends 0               1,753       (1,753)    
Net noncontrolling interest acquired 125                       240   (115)
Ending balance (shares) at Jun. 30, 2021         35 103,109                  
Ending balance at Jun. 30, 2021 (8,906)       $ 0 $ 103     761,412       (764,150) (6,279) 8
Beginning balance (shares) at Mar. 31, 2021         35 102,773                  
Beginning balance at Mar. 31, 2021 (1,463)       $ 0 $ 103     757,352       (750,221) (8,704) 7
Increase (Decrease) in Stockholders' Equity [Roll Forward]                              
Net income (loss) (13,043)                       (13,043)    
Foreign currency translation adjustment 2,425                         2,425  
Exercise of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan (shares)           336                  
Exercise of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan 1,282               1,282            
Taxes withheld on net settled vesting of restricted stock units (356)               (356)            
Issuance of shares       $ (59)               $ (59)      
Share-based compensation 2,307               2,307            
Series E preferred stock dividends 0               886       (886)    
Net noncontrolling interest acquired 1                           1
Ending balance (shares) at Jun. 30, 2021         35 103,109                  
Ending balance at Jun. 30, 2021 (8,906)       $ 0 $ 103     761,412       (764,150) (6,279) 8
Beginning balance (shares) at Dec. 31, 2021         25 105,381                  
Beginning balance at Dec. 31, 2021 (24,854)       $ 0 $ 105     770,619       (787,047) (8,531)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                              
Net income (loss) (37,599)                       (37,599)    
Foreign currency translation adjustment 3,434                         3,434  
Adjustment relating to extinguishment of 2022 Notes     $ 1,728               $ 1,728        
Exercise of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan (shares)           2,269                  
Exercise of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan 151         $ 3     148            
Taxes withheld on net settled vesting of restricted stock units (in shares)           (5)                  
Taxes withheld on net settled vesting of restricted stock units (36)               (36)            
Share-based compensation 13,486               13,486            
Series E preferred stock dividends                 1,338       (1,338)    
Ending balance (shares) at Jun. 30, 2022         25 107,645                  
Ending balance at Jun. 30, 2022 (43,690)       $ 0 $ 108     787,283       (825,984) (5,097) 0
Beginning balance (shares) at Mar. 31, 2022         25 107,389                  
Beginning balance at Mar. 31, 2022 (34,190)       $ 0 $ 107     784,267       (812,931) (5,633) 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]                              
Net income (loss) (12,376)                       (12,376)    
Foreign currency translation adjustment 536                         536  
Exercise of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan (shares)           256                  
Exercise of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan 75         $ 1     74            
Taxes withheld on net settled vesting of restricted stock units (22)               (22)            
Share-based compensation 2,287               2,287            
Series E preferred stock dividends 0               677       (677)    
Ending balance (shares) at Jun. 30, 2022         25 107,645                  
Ending balance at Jun. 30, 2022 $ (43,690)       $ 0 $ 108     $ 787,283       $ (825,984) $ (5,097) $ 0