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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

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