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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Common Stock
Additional Paid-in Capital
Treasury Stock
(Accumulated Deficit)
Accumulated Other Comprehensive Income
Non-controlling interest
Total
Balance at Dec. 31, 2014 $ 122 $ 1,258,182 $ (443) $ (1,206,286) $ 63,754 $ 0 $ 115,329
Balance (in shares) at Dec. 31, 2014 38,148,076            
Increase (Decrease) in Stockholders' Equity              
Common stock issued upon option exercises $ 0 39         39
Common stock issued (in shares) 11,543            
Repurchase of ordinary shares     (3,695)       (3,695)
Repurchase of ordinary shares (in shares) (1,563,302)            
Restricted stock issued and restricted stock units released             0
Restricted stock issued and restricted stock units released (in shares) 138,997            
Stock-based compensation   1,546         1,546
Treasury stock retirement             0
Net income (loss)       (27,158)     (27,158)
Other comprehensive income:              
Foreign currency translation         (1,611)   (1,611)
Realized loss from available-for-sale investments         (673)   (673)
Balance at Dec. 31, 2015 $ 122 1,259,767 (4,138) (1,233,444) 61,470 0 83,777
Balance (in shares) at Dec. 31, 2015 36,735,314            
Increase (Decrease) in Stockholders' Equity              
Repurchase of ordinary shares     (4,096)       (4,096)
Repurchase of ordinary shares (in shares) (2,054,655)            
Restricted stock issued and restricted stock units released             0
Restricted stock issued and restricted stock units released (in shares) 543,894            
Stock-based compensation   2,238         2,238
Net income (loss)       290   (158) 132
Acquisition of non-controlling interests           158 158
Other comprehensive income:              
Foreign currency translation         570   570
Recognition due to closure of the subsidiaries         (38)   (38)
Balance at Dec. 31, 2016 $ 122 1,262,005 (8,234) (1,233,154) 62,002 $ 0 $ 82,741
Balance (in shares) at Dec. 31, 2016 35,224,553           35,225,000
Increase (Decrease) in Stockholders' Equity              
Common stock issued upon option exercises $ 0 135         $ 135
Common stock issued upon option exercises (in shares) 51,666            
Repurchase of ordinary shares     (140)       (140)
Repurchase of ordinary shares (in shares) (72,739)            
Restricted stock issued and restricted stock units released   866         866
Restricted stock issued and restricted stock units released (in shares) 302,886            
Net income (loss)       6,981     6,981
Other comprehensive income:              
Foreign currency translation         2,112   2,112
Recognition due to closure of the subsidiaries         (1,703)   (1,703)
Balance at Dec. 31, 2017 $ 122 $ 1,263,006 $ (8,374) $ (1,226,173) $ 62,411   $ 90,992
Balance (in shares) at Dec. 31, 2017 35,506,366           35,506,000