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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ (DEFICIT) EQUITY Statement - USD ($)
shares in Thousands, $ in Thousands
Total
Ordinary shares
Preferred Stock [Member]
Additional paid-in capital
Accumulated deficit
Accumulated other comprehensive (loss) income
Treasury shares
Beginning balance (in shares) at Dec. 31, 2018   42,720         5,407
Beginning balance at Dec. 31, 2018 $ 2,780 $ 427   $ 433,756 $ (357,989) $ (23,416) $ (49,998)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net loss (13,018)       (13,018)    
Other comprehensive income (loss) 213         213  
Vesting of restricted shares 0            
Employee share purchase plan share issuance 92            
Stock-based compensation expense 351     351      
Ending balance (in shares) at Mar. 31, 2019   42,763         5,407
Ending balance at Mar. 31, 2019 (9,582) $ 427   434,199 (371,007) (23,203) $ (49,998)
Beginning balance (in shares) at Dec. 31, 2019   42,927         5,407
Beginning balance at Dec. 31, 2019 (29,199) $ 429   434,391 (391,215) (22,806) $ (49,998)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net loss (865)       (865)    
Other comprehensive income (loss) (821)         (821)  
Exercise of stock options (in shares)   146          
Exercise of stock options 1,389 $ 2   1,387      
February 2020 private placement (in shares)   8,680 488        
February 2020 private placement 60,733 $ 87 $ 5 60,641      
Vesting of restricted shares (in shares)   19          
Vesting of restricted shares 0            
Employee share purchase plan share issuance (in shares)   40          
Employee share purchase plan share issuance 88     88      
Stock-based compensation expense 742     742      
Ending balance (in shares) at Mar. 31, 2020   51,812 488       5,407
Ending balance at Mar. 31, 2020 $ 32,067 $ 518 $ 5 $ 497,249 $ (392,080) $ (23,627) $ (49,998)