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CONDENSED INTERIM CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands | Total | Ordinary Shares [Member] | Additional Paid-in Capital [Member] | Accumulated other comprehensive income (loss) [Member] | Accumulated Deficit [Member]
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2013 | $ 226,033 | $ 1,932 | $ 873,045 | $ 1,591 |  | $ (650,535)
Balance, shares at Dec. 31, 2013 |  | 42,125,774 |  |  |  |
Issuance of restricted share units (RSUs) | 19 | $ 19 |  |  |  |
Issuance of restricted share units (RSUs), shares |  | 332,650 |  |  |  |
Stock-based compensation of options and RSUs related to employees and non- employees | 2,427 |  | $ 2,427 |  |  |
Exercise of stock options | 1,167 | $ 15 | $ 1,152 |  |  |
Exercise of stock options, shares |  | 272,000 |  |  |  |
Comprehensive loss | (4,507) |  |  | $ (3,011) |  | $ (1,496)
Balance at Dec. 31, 2014 | $ 225,139 | $ 1,966 | $ 876,624 | $ (1,420) |  | $ (652,031)
Balance, shares at Dec. 31, 2014 | 42,730,424 | 42,730,424 |  |  |  |
Issuance of restricted share units (RSUs) | $ 14 | $ 14 |  |  |  |
Issuance of restricted share units (RSUs), shares |  | 277,175 |  |  |  |
Stock-based compensation of options and RSUs related to employees and non- employees | 1,665 |  | $ 1,665 |  |  |
Exercise of stock options | 5,580 | $ 66 | $ 5,514 |  |  |
Exercise of stock options, shares |  | 1,284,048 |  |  |  |
Comprehensive loss | (49,167) |  |  | $ (2,082) |  | $ (47,085)
Balance at Sep. 30, 2015 | $ 183,231 | $ 2,046 | $ 883,803 | $ (3,502) | [1] | $ (699,116)
Balance, shares at Sep. 30, 2015 | 44,291,647 | 44,291,647 |  |  |  |
[1] | As of September 30, 2015 the comprehensive loss consists of $ 3,316 foreign currency translation adjustments and $ 186 unrealized loss on hedging instruments.

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