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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ DEFICIT - USD ($)
shares in Thousands, $ in Thousands
Total
Preferred Stock
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Accumulated Other Comprehensive (Loss) Income
Beginning balance (in shares) at Dec. 31, 2022   25 10,847 [1]      
Beginning balance at Dec. 31, 2022 $ (70,118) $ 0 $ 11 [1] $ 793,952 [1] $ (857,751) $ (6,330)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net (loss) income (31,846)       (31,846)  
Foreign currency translation adjustment (958)         (958)
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld (in shares) [1]     52      
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld 51     51 [1]    
Issuance of common shares in connection with a public offering, net of issuance costs (in shares) [1]     804      
Issuance of common shares in connection with a public offering, net of issuance costs 6,058   $ 1 [1] 6,057 [1]    
Share-based compensation 6,030     6,030 [1]    
Preferred stock dividends 0     2,218 [1] (2,218)  
Ending balance (in shares) at Sep. 30, 2023   25 11,703 [2]      
Ending balance at Sep. 30, 2023 (90,783) $ 0 $ 12 [2] 808,308 [2] (891,815) (7,288)
Beginning balance (in shares) at Jun. 30, 2023   25 11,687 [2]      
Beginning balance at Jun. 30, 2023 (70,815) $ 0 $ 12 [2] 805,282 [2] (869,254) (6,855)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net (loss) income (21,805)       (21,805)  
Foreign currency translation adjustment (433)         (433)
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld (in shares) [2]     16      
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld 3     3 [2]    
Issuance of common shares in connection with a public offering, net of issuance costs (in shares) [2]     0      
Issuance of common shares in connection with a public offering, net of issuance costs 0   $ 0 [2] 0 [2]    
Share-based compensation 2,267     2,267 [2]    
Preferred stock dividends 0     756 [2] (756)  
Ending balance (in shares) at Sep. 30, 2023   25 11,703 [2]      
Ending balance at Sep. 30, 2023 (90,783) $ 0 $ 12 [2] 808,308 [2] (891,815) (7,288)
Beginning balance (in shares) at Dec. 31, 2023   25 11,879 [1]      
Beginning balance at Dec. 31, 2023 (102,105) $ 0 $ 12 [1] 810,138 [1] (906,928) (5,327)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net (loss) income 5,138       5,138  
Foreign currency translation adjustment (1,385)         (1,385)
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld (in shares) [1]     177      
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld 207     207 [1]    
Share-based compensation 2,815     2,815 [1]    
Issuance of common stock in connection with debt restructurings (in shares) [1]     487      
Issuance of common stock in connection with debt restructurings 4,925   $ 1 [1] 4,924 [1]    
Issuance of common stock warrants in connection with debt restructurings 5,342     5,342 [1]    
Preferred stock dividends 0     2,425 [1] (2,425)  
Ending balance (in shares) at Sep. 30, 2024   25 12,543 [1]      
Ending balance at Sep. 30, 2024 (85,063) $ 0 $ 13 [1] 825,851 [2] (904,215) (6,712)
Beginning balance (in shares) at Jun. 30, 2024   25 11,910 [2]      
Beginning balance at Jun. 30, 2024 (101,763) $ 0 $ 12 [2] 816,002 [2] (912,357) (5,420)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net (loss) income 8,969       8,969  
Foreign currency translation adjustment (1,292)         (1,292)
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld (in shares) [2]     146      
Exercises of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan, net of taxes withheld 213     213 [2]    
Share-based compensation 1,229     1,229 [2]    
Issuance of common stock in connection with debt restructurings (in shares) [2]     487      
Issuance of common stock in connection with debt restructurings 4,925   $ 1 [2] 4,924 [2]    
Issuance of common stock warrants in connection with debt restructurings 2,656     2,656 [2]    
Preferred stock dividends 0     827 [2] (827)  
Ending balance (in shares) at Sep. 30, 2024   25 12,543 [1]      
Ending balance at Sep. 30, 2024 $ (85,063) $ 0 $ 13 [1] $ 825,851 [2] $ (904,215) $ (6,712)
[1] Adjusted retroactively for reverse stock split that occurred on January 24, 2024, see Note 1
[2] Adjusted retroactively for reverse stock split that occurred on January 24, 2024, see Note 1