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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Ordinary Shares
Additional Paid-in Capital
Treasury Stock
(Accumulated Deficit)
Accumulated Other Comprehensive Income
Balance at Dec. 31, 2019 $ 99,188 $ 123 $ 1,265,615 $ (11,948) $ (1,216,703) $ 62,101
Balance (in shares) at Dec. 31, 2019 [1]   8,881,081        
Increase (Decrease) in Stockholders' Equity            
Share buyback $ (374)     (374)    
Share buyback (in shares) (199,331) (49,833) [1]        
Restricted shares issued and restricted share units released $ 703   703      
Restricted shares issued and restricted share units released (in shares) [1]   143,320        
Net loss (23,676)       (23,676)  
Other comprehensive income (loss):            
Foreign currency translation 1,560         1,560
Balance at Dec. 31, 2020 77,401 $ 123 1,266,318 (12,322) (1,240,379) 63,661
Balance (in shares) at Dec. 31, 2020 [1]   8,974,568        
Increase (Decrease) in Stockholders' Equity            
Share buyback          
Share buyback (in shares)          
Restricted shares issued and restricted share units released $ 504   504      
Restricted shares issued and restricted share units released (in shares) [1]   53,917        
Net loss (5,828)       (5,828)  
Other comprehensive income (loss):            
Foreign currency translation (3,720)         (3,720)
CTA recognition on liquidation of the subsidiaries (6)         (6)
Balance at Dec. 31, 2021 $ 68,351 $ 123 1,266,822 (12,322) (1,246,207) 59,935
Balance (in shares) at Dec. 31, 2021 9,028,000 9,028,485 [1]        
Increase (Decrease) in Stockholders' Equity            
Option exercise $ 20   20      
Option exercise (in shares) [1]   4,430        
Cancellation of restricted shares issued [1]   4,702        
Share buyback $ (13)     (13)    
Share buyback (in shares) (15,699) (3,925) [1]        
Restricted shares issued and restricted share units released $ 603   603      
Restricted shares issued and restricted share units released (in shares) [1]   48,795        
Net loss (5,002)       (5,002)  
Other comprehensive income (loss):            
Foreign currency translation (6,495)         (6,495)
Balance at Dec. 31, 2022 $ 57,464 $ 123 $ 1,267,445 $ (12,335) $ (1,251,209) $ 53,440
Balance (in shares) at Dec. 31, 2022 9,073,000 9,073,083 [1]        
[1] Authorized share capital of the Company was amended by the consolidation of the existing 250,000,000 ordinary shares of US$0.00375 par value each into 62,500,000 ordinary shares of US$0.015 par value each effective from June 28, 2022. The outstanding shares and treasury stock shares for 2021 and 2020 have been adjusted retroactively to reflect the one-for-four reverse share split.