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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME (USD $) In Thousands, except Share data | Total | Ordinary Shares [Member] | Additional Paid-in Capital [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Accumulated Deficit [Member] | Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2009 | $ 26,915 | $ 56 | $ 85,675 | $ 45 | $ (58,861) |
Balance, shares at Dec. 31, 2009 |  | 19,977,000 |  |  |  |
Shares issued in public offering | 16,968 | 12 | 16,956 |  |  |
Shares issued in public offering, shares |  | 4,428,000 |  |  |  |
Exercise of warrants | 1 | 1 |  |  |  |
Exercise of warrants, shares |  | 336,000 |  |  |  |
Employee share-based plans | 1,322 | 2 | 1,320 |  |  |
Employee share-based plans, shares | 557,407 | 557,000 |  |  |  |
Shares issued under employee share-based plans |  |  |  |  |  |
Shares issued under employee share-based plans, shares |  | 77,000 |  |  |  |
Amortization of deferred stock based compensation | 710 |  | 710 |  |  |
Other comprehensive income | 293 |  |  | 293 |  | 293
Net income for the year | 22,175 |  |  |  | 22,175 | 22,175
Total comprehensive income | 22,468 |  |  |  |  | 22,468
Balance at Dec. 31, 2010 | 68,384 | 71 | 104,661 | 338 | (36,686) |
Balance, shares at Dec. 31, 2010 |  | 25,375,000 |  |  |  |
Exercise of warrants | 1,773 | 1 | 1,772 |  |  |
Exercise of warrants, shares |  | 581,000 |  |  |  |
Employee share-based plans | 936 |  | 936 |  |  |
Employee share-based plans, shares | 436,601 | 436,000 |  |  |  |
Shares issued under employee share-based plans |  |  |  |  |  |
Shares issued under employee share-based plans, shares |  | 76,000 |  |  |  |
Amortization of deferred stock based compensation | 1,435 |  | 1,435 |  |  |
Other comprehensive income | (740) |  |  | (740) |  | (740)
Net income for the year | 28,118 |  |  |  | 28,118 | 28,118
Total comprehensive income | 27,378 |  |  |  |  | 27,378
Balance at Dec. 31, 2011 | 99,906 | 72 | 108,804 | (402) | (8,568) |
Balance, shares at Dec. 31, 2011 | 26,467,542 | 26,468,000 |  |  |  |
Employee share-based plans | 259 |  | 259 |  |  |
Employee share-based plans, shares | 131,922 | 132,000 |  |  |  |
Shares issued under employee share-based plans |  |  |  |  |  |
Shares issued under employee share-based plans, shares |  | 82,000 |  |  |  |
Amortization of deferred stock based compensation | 1,927 |  | 1,927 |  |  |
Other comprehensive income | 851 |  |  | 851 |  | 851
Net income for the year | 11,828 |  |  |  | 11,828 | 11,828
Total comprehensive income | 12,679 |  |  |  |  | 12,679
Balance at Dec. 31, 2012 | $ 114,771 | $ 72 | $ 110,990 | $ 449 | $ 3,260 |
Balance, shares at Dec. 31, 2012 | 26,681,876 | 26,682,000 |  |  |  |

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