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SHARE CAPITAL (Tables) | 12 Months Ended
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Dec. 31, 2012
SHARE CAPITAL [Abstract] |
Schedule of Options and Restricted Stocks Granted |
Year of grant |  |  | No. of options or restricted stock granted |  |  | Exercise price range |  |  | Vesting period |  | Fair value at grant (U.S. dollars in thousands) |  |  | Expiration period |
| 2010 |  |  |  | 1,016,000 |  |  |  | $6.90 |  |  | 3 years commencing upon achievement of a certain milestone |  | $ | 5,673 |  |  |  | 10 years |
| 2010 |  |  |  | 428,000 |  |  |  | $6.32-$9.66 |  |  | 4 years |  | $ | 2,147 |  |  |  | 10 years |
| 2012 |  |  |  | 400,000 |  |  |  | n/a |  |  | 3 years |  | $ | 2,288 |  |  |  | n/a |
| 2012 |  |  |  | 1,100,000 |  |  |  | n/a |  |  | 4 years |  | $ | 6,292 |  |  |  | n/a |
|  |  |  |  | 2,944,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Assumptions Used to Estimate Fair Value of Stock Option Award using Black-Scholes Valuation Model |
|  | 2010 |
Dividend yield |  |  | 0 | %
Expected volatility |  |  | 75 | %
Risk-free interest rate |  |  | 3.23 | %
Expected life - in years |  |  | 8.8 |
Summary of Stock Option Activity - Options Granted to Employees |
|  | Year ended December 31, |
|  | 2010 |  |  | 2011 |  |  | 2012 |
|  |  |  |  | Weighted |  |  |  |  |  | Weighted |  |  |  |  |  | Weighted |
|  | Number |  |  | average |  |  | Number |  |  | average |  |  | Number |  |  | average |
|  | of |  |  | exercise |  |  | of |  |  | exercise |  |  | of |  |  | exercise |
|  | options |  |  | price |  |  | options |  |  | price |  |  | options |  |  | price |
Outstanding at beginning of year |  |  | 5,366,729 |  |  | $ | 2.476 |  |  |  | 6,367,979 |  |  | $ | 3.576 |  |  |  | 6,141,030 |  |  | $ | 3.563 |
Changes during the year: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted |  |  | 1,444,000 |  |  |  | 7.076 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forfeited and Expired |  |  | 13,441 |  |  |  | 3.551 |  |  |  | 44,856 |  |  |  | 6.207 |  |  |  | 25,858 |  |  |  | 4.372 |
Exercised (*) |  |  | 429,309 |  |  |  | 1.602 |  |  |  | 182,093 |  |  |  | 1.652 |  |  |  | 861,593 |  |  |  | 1.346 |
Outstanding at end of year |  |  | 6,367,979 |  |  | $ | 3.576 |  |  |  | 6,141,030 |  |  | $ | 3.563 |  |  |  | 5,253,579 |  |  | $ | 3.923 |
Exercisable at end of year |  |  | 4,267,850 |  |  | $ | 2.183 |  |  |  | 4,647,834 |  |  | $ | 2.581 |  |  |  | 4,258,441 |  |  | $ | 3.201 |
Summary of Restricted Stock Activity - Options Granted to Employees |
Year ended December 31, 2012
|  | Number of Restricted Shares |
Outstanding at beginning of year |  |  |
Changes during the year: |  |  |  |
Granted |  |  | 1,500,000 |
Forfeited |  |  | 3,208 |
Outstanding at end of year |  |  | 1,496,792 |
Exercisable at end of year |  |  | 102,084 |
Schedule of Options Granted to Service Providers |
|  | Year ended December 31, |
|  | 2010 |  |  | 2011 |  |  | 2012 |
|  |  |  |  | Weighted |  |  |  |  |  | Weighted |  |  |  |  |  | Weighted |
|  | Number |  |  | average |  |  | Number |  |  | average |  |  | Number |  |  | average |
|  | of |  |  | exercise |  |  | of |  |  | exercise |  |  | of |  |  | exercise |
|  | options |  |  | price |  |  | options |  |  | price |  |  | options |  |  | price |
Outstanding at beginning of year |  |  | 1,438,692 |  |  | $ | 4.697 |  |  |  | 1,438,692 |  |  | $ | 4.697 |  |  |  | 1,238,692 |  |  | $ | 5.385 |
Changes during the year- Exercised (*) |  |  |  |  |  |  |  |  |  |  | 200,000 |  |  |  | 0.001 |  |  |  | 326,267 |  |  |  | 0.12 |
Outstanding at end of year |  |  | 1,438,692 |  |  | $ | 4.697 |  |  |  | 1,238,692 |  |  | $ | 5.385 |  |  |  | 912,425 |  |  | $ | 7.259 |
Exercisable at end of year |  |  | 1,421,734 |  |  | $ | 4.653 |  |  |  | 1,235,567 |  |  | $ | 5.385 |  |  |  | 912,425 |  |  | $ | 7.259 |
Schedule of Information about Share Options Outstanding |
December 31, 2012 |
Options and restricted stock outstanding |  |  | Options exercisable and restricted stock vested |
Exercise prices |  |  | Number of Options and restricted stock outstanding at end of year |  |  | Weighted average remaining contractual life |  |  | Number of options exercisable and restricted stock vested at end of year |  |  | Weighted average remaining contractual life |
| n/a (Restricted Stock) |  |  |  | 1,496,792 |  |  |  | n/a |  |  |  | 102,084 |  |  |  | n/a |
$ | 0.001 |  |  |  | 719,207 |  |  |  | 2.54 |  |  |  | 719,207 |  |  |  | 2.54 |
$ | 0.120 |  |  |  | 447,850 |  |  |  | 1.05 |  |  |  | 447,850 |  |  |  | 1.05 |
$ | 0.399 |  |  |  | 23,087 |  |  |  | 1.92 |  |  |  | 23,087 |  |  |  | 1.92 |
$ | 0.972 |  |  |  | 996,353 |  |  |  | 3.44 |  |  |  | 996,353 |  |  |  | 3.44 |
$ | 2.350 |  |  |  | 40,000 |  |  |  | 5.82 |  |  |  | 40,000 |  |  |  | 5.82 |
$ | 2.650 |  |  |  | 402,882 |  |  |  | 6.15 |  |  |  | 396,744 |  |  |  | 6.15 |
$ | 3.020 |  |  |  | 50,000 |  |  |  | 5.10 |  |  |  | 50,000 |  |  |  | 5.10 |
$ | 5.000 |  |  |  | 1,708,000 |  |  |  | 5.10 |  |  |  | 1,708,000 |  |  |  | 5.10 |
$ | 6.810 |  |  |  | 160,000 |  |  |  | 7.10 |  |  |  | 110,000 |  |  |  | 7.10 |
$ | 6.900 |  |  |  | 1,003,083 |  |  |  | 7.15 |  |  |  | 168,083 |  |  |  | 7.15 |
$ | 7.550 |  |  |  | 160,000 |  |  |  | 7.66 |  |  |  | 90,000 |  |  |  | 7.66 |
$ | 9.660 |  |  |  | 68,000 |  |  |  | 7.83 |  |  |  | 34,000 |  |  |  | 7.83 |
$ | 16.700 |  |  |  | 387,542 |  |  |  | 3.99 |  |  |  | 387,542 |  |  |  | 3.99 |
|  |  |  |  | 7,662,796 |  |  |  |  |  |  |  | 5,272,950 |  |  |  |  |
Schedule of Stock-Based Compensation Expense in Statement of Operations |
|  | Year ended December 31, |
(U.S. dollars in thousands) |  | 2010 |  |  | 2011 |  |  | 2012 |
Cost of revenues |  |  |  |  |  |  |  |  |  | $ | 220 |
Research and development expenses |  | $ | 630 |  |  | $ | 422 |  |  |  | 4,756 |
General and administrative expenses |  |  | 652 |  |  |  | 464 |  |  |  | 2,775 |
|  | $ | 1,282 |  |  | $ | 886 |  |  | $ | 7,751 |

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