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Shareholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2012
Share Based Compensation [Abstract] |
Summary Of Stock Options And RSUs Granted |
| Year ended December 31, 2010 |
|  | Number of options and RSUs |  |  | Weighted average exercise price |  |  | Weighted average remaining contractual term (in years) |  |  | Aggregate intrinsic value |
Outstanding at beginning of year |  |  | 5,388,323 |  |  | $ | 5.87 |  |  |  |  |  |  |
Granted *) |  |  | 922,500 |  |  | $ | 8.27 |  |  |  |  |  |  |
Exercised |  |  | (979,982 | ) |  | $ | 5.04 |  |  |  |  |  |  |
Forfeited or expired |  |  | (402,605 | ) |  | $ | 9.92 |  |  |  |  |  |  |
Outstanding at end of the year |  |  | 4,928,236 |  |  | $ | 6.15 |  |  |  | 6.38 |  |  | $ | 34,698 |
Options exercisable at end of the year |  |  | 3,192,108 |  |  | $ | 5.53 |  |  |  | 5.33 |  |  | $ | 24,455 |
Vested and expected to vest |  |  | 4,836,371 |  |  | $ | 6.12 |  |  |  | 6.38 |  |  | $ | 34,193 |
| *) Including 200,000 RSUs granted
|  | Year ended December 31, 2011 |
|  | Number of options and RSUs |  |  | Weighted average exercise price |  |  | Weighted average remaining contractual term (in years) |  |  | Aggregate intrinsic value |
Outstanding at beginning of year *) |  |  | 4,928,236 |  |  | $ | 6.15 |  |  |  |  |  |  |
Granted |  |  | 1,795,502 |  |  | $ | 11.79 |  |  |  |  |  |  |
Exercised (**) |  |  | (1,057,122 | ) |  | $ | 4.24 |  |  |  |  |  |  |
Forfeited or expired |  |  | (210,272 | ) |  | $ | 9.92 |  |  |  |  |  |  |
Outstanding at end of the year |  |  | 5,456,344 |  |  | $ | 8.23 |  |  |  | 7.01 |  |  | $ | 7,256 |
Options exercisable at end of the year |  |  | 2,928,548 |  |  | $ | 6.58 |  |  |  | 5.55 |  |  | $ | 5,547 |
Vested and expected to vest |  |  | 5,198,660 |  |  | $ | 8.08 |  |  |  | 6.91 |  |  | $ | 7,204 |
| *) Including 200,000 RSUs granted **) Including 50,000 RSUs exercised
|  | Year ended December 31, 2012 |
|  | Number of options and RSUs |  |  | Weighted average exercise price |  |  | Weighted average remaining contractual term (in years) |  |  | Aggregate intrinsic value |
Outstanding at beginning of year *) |  |  | 5,456,344 |  |  | $ | 8.23 |  |  |  |  |  |  |
Granted |  |  | 1,217,499 |  |  | $ | 8.45 |  |  |  |  |  |  |
Exercised (**) |  |  | (240,171 | ) |  | $ | 3.04 |  |  |  |  |  |  |
Forfeited or expired |  |  | (306,290 | ) |  | $ | 10.17 |  |  |  |  |  |  |
Outstanding at end of the year |  |  | 6,127,382 |  |  | $ | 8.38 |  |  |  | 7.95 |  |  | $ | 492 |
Options exercisable at end of the year |  |  | 3,801,244 |  |  | $ | 7.62 |  |  |  | 5.52 |  |  | $ | 50 |
Vested and expected to vest |  |  | 5,827,744 |  |  | $ | 8.32 |  |  |  | 7.94 |  |  | $ | 477 |
| *) Including 200,000 RSUs granted **) Including 50,000 RSU's exercised
Summary Of Stock Options And RSUs Granted Separated Into Ranges Of Exercise Price |
Exercise price (range) |  |  | Options and RSUs outstanding as of December 31, 2011 |  |  | Weighted average remaining contractual life (years) |  |  | Weighted average exercise price |  |  | Options and RSUs exercisable as of December 31, 2011 |  |  | Remaining contractual life (years for exercisable options |  |  | Weighted average exercise price |
$ |  |  |  |  |  |  |  |  | $ |  |  |  |  |  |  |  |  | $ |
RSUs 0.0 |  |  |  | 150,000 |  |  |  |  |  |  |  |  |  | - |  |  |  |  |  |  | - |
| 0.00-2.00 |  |  |  | 76,275 |  |  |  | 0.51 |  |  |  | 1.48 |  |  |  | 76,275 |  |  |  | 0.51 |  |  |  | 1.48 |
| 2.34-3.90 |  |  |  | 98,475 |  |  |  | 2.93 |  |  |  | 3.89 |  |  |  | 98,475 |  |  |  | 2.93 |  |  |  | 3.89 |
| 4.09-5.98 |  |  |  | 2,044,894 |  |  |  | 5.05 |  |  |  | 5.16 |  |  |  | 1,794,049 |  |  |  | 4.79 |  |  |  | 5.10 |
| 6.12-7.96 |  |  |  | 60,864 |  |  |  | 6.11 |  |  |  | 6.80 |  |  |  | 39,639 |  |  |  | 5.09 |  |  |  | 6.75 |
| 8.16-9.98 |  |  |  | 1,184,004 |  |  |  | 8.26 |  |  |  | 9.11 |  |  |  | 588,290 |  |  |  | 7.59 |  |  |  | 9.13 |
| 10.19-14.3 |  |  |  | 1,841,832 |  |  |  | 8.90 |  |  |  | 12.31 |  |  |  | 331,820 |  |  |  | 7.99 |  |  |  | 11.98 |
|  |  |  |  | 5,456,344 |  |  |  | 7.01 |  |  |  | 8.23 |  |  |  | 2,928,548 |  |  |  | 5.55 |  |  |  | 6.58 |
Exercise price (range) |  |  | Options and RSUs outstanding as of December 31, 2012 |  |  | Weighted average remaining contractual life (years) |  |  | Weighted average exercise price |  |  | Options and RSUs exercisable as of December 31, 2012 |  |  | Remaining contractual life (years for exercisable options |  |  | Weighted average exercise price |
$ |  |  |  |  |  |  |  |  | $ |  |  |  |  |  |  |  |  | $ |
RSUs 0.0 |  |  |  | 100,000 |  |  |  |  |  |  |  |  |  | - |  |  |  |  |  |  |  |
| 0.00-2.00 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
| 2.34-3.90 |  |  |  | 94,975 |  |  |  | 2.00 |  |  |  | 3.89 |  |  |  | 94,975 |  |  |  | 2.00 |  |  |  | 3.89 |
| 4.02-5.98 |  |  |  | 2,035,969 |  |  |  | 4.30 |  |  |  | 5.13 |  |  |  | 1,998,447 |  |  |  | 4.23 |  |  |  | 5.12 |
| 6.12-7.96 |  |  |  | 98,364 |  |  |  | 6.86 |  |  |  | 6.87 |  |  |  | 43,264 |  |  |  | 3.79 |  |  |  | 6.79 |
| 8.16-9.98 |  |  |  | 2,095,088 |  |  |  | 8.08 |  |  |  | 9.02 |  |  |  | 757,064 |  |  |  | 6.86 |  |  |  | 9.12 |
| 10.19-14.3 |  |  |  | 1,702,986 |  |  |  | 7.86 |  |  |  | 12.33 |  |  |  | 907,494 |  |  |  | 7.66 |  |  |  | 12.29 |
|  |  |  |  | 6,127,382 |  |  |  | 6.52 |  |  |  | 8.52 |  |  |  | 3,801,244 |  |  |  | 5.51 |  |  |  | 7.62 |
Schedule Of Equity-Based Compensation Expense |
| Year ended December 31, |
|  | 2010 |  |  | 2011 |  |  | 2012 |
Cost of revenues |  | $ | 315 |  |  | $ | 255 |  |  | $ | 197 |
Research and development *) |  |  | 814 |  |  |  | 1,536 |  |  |  | 1,638 |
Selling and marketing |  |  | 1,177 |  |  |  | 2,460 |  |  |  | 1,975 |
General and administrative |  |  | 1,901 |  |  |  | 2,313 |  |  |  | 1,650 |
Total stock-based compensation expenses |  | $ | 4,207 |  |  | $ | 6,564 |  |  | $ | 5,460 |
| *) | Including $133, $ 460 and $ 473 compensation expenses related to RSUs for the year ended December 31, 2010, 2011 and 2012, respectively.

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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