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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands | Common Stock [Member] | Additional paid-in Capital [Member] | Treasury shares at cost [Member] | Accumulated other comprehensive loss [Member] | Accumulated deficit [Member] | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2016 | $ 214 |  | $ 409,320 | $ (20,091) | $ (7,848) | $ (265,431) | $ 116,164
Balance, shares at Dec. 31, 2016 | 77,768,929 |  |  |  |  |  |
Exercise of options and vesting of RSU's |  | [1] | 294 |  |  |  | 294
Exercise of options and vesting of RSU's, shares | 276,263 |  |  |  |  |  |
Share-based compensation expense |  |  | 1,203 |  |  |  | 1,203
Other comprehensive income (loss), net |  |  |  |  | 677 |  | 677
Net income (loss) |  |  |  |  |  | 15,560 | 15,560
Balance at Dec. 31, 2017 | $ 214 |  | 410,817 | (20,091) | (7,171) | (249,871) | $ 133,898
Balance, shares at Dec. 31, 2017 | 78,045,192 |  |  |  |  |  | 78,045,192
Cumulative effect of the new revenue recognition standard |  |  |  |  |  | 70 | $ 70
Exercise of options and vesting of RSU's |  | [1] | 2,611 |  |  |  | 2,611
Exercise of options and vesting of RSU's, shares | 2,044,466 |  |  |  |  |  |
Share-based compensation expense |  |  | 1,980 |  |  |  | 1,980
Other comprehensive income (loss), net |  |  |  |  | (2,037) |  | (2,037)
Net income (loss) |  |  |  |  |  | 23,046 | 23,046
Balance at Dec. 31, 2018 | $ 214 |  | 415,408 | (20,091) | (9,208) | (226,755) | $ 159,568
Balance, shares at Dec. 31, 2018 | 80,089,658 |  |  |  |  |  | 80,089,658
Exercise of options and vesting of RSU's | $ 1 |  | 601 |  |  |  | $ 602
Exercise of options and vesting of RSU's, shares | 573,147 |  |  |  |  |  | 422,311
Share-based compensation expense |  |  | 2,053 |  |  |  | $ 2,053
Other comprehensive income (loss), net |  |  |  |  | 542 |  | 542
Net income (loss) |  |  |  |  |  | (2,344) | (2,344)
Balance at Dec. 31, 2019 | $ 215 |  | $ 418,062 | $ (20,091) | $ (8,666) | $ (229,099) | $ 160,421
Balance, shares at Dec. 31, 2019 | 80,662,805 |  |  |  |  |  | 80,662,805
[1] | Represent an amount lower than $1

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