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SHAREHOLDERS' EQUITY | 12 Months Ended
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Dec. 31, 2017
Stockholders' Equity Note [Abstract] |
SHAREHOLDERS' EQUITY |
NOTE 12:- | SHAREHOLDERS' EQUITY
The ordinary shares of the Company are traded on the Nasdaq Global Select Market, under the symbol "CRNT". Up to December 11, 2017, the ordinary shares of the Company were also traded on the Tel Aviv Stock Exchange (TASE). On September 11, 2017 the Company notified TASE that it decided to voluntarily delist its ordinary shares from trading on TASE. Accordingly, the last trading day of Ceragon’s ordinary shares on TASE was December 7, 2017 and the shares were delisted on December 11, 2017. Following the delisting, all of the Company’s ordinary shares are traded on the NASDAQ.
| a. | General:
The ordinary shares entitle their holders to receive notice to participate and vote in general meetings of the Company, the right to share in distributions upon liquidation of the Company, and to receive dividends, if declared.
| b. | Stock options plans:
| 1. | In 2003, the Company adopted a share option plan (the "Plan"). Under the Plan, options and RSU's may be granted to officers, directors, employees and consultants of the Company or its subsidiaries. The options vest primarily over four years. The options expire between six to ten years from the date of grant. In December 2012, the Company extended the term of the Plan for an additional period of ten years.
Upon adoption of the Plan, the Company reserved for issuance 8,639,000 ordinary shares in accordance with the respective terms thereof. From the adoption of the plan until December 31, 2017 the board of the company approved to reserve an additional amount of 13,596,688 ordinary shares. Any options or RSU's, which are canceled or forfeited before the expiration date, become available for future grants. As of December 31, 2017, the Company has 413,701 Ordinary shares available for future grant under the Plan.
| 2. | On September 6, 2010, the Company's board of directors amended the Plan so as to enable to grant Restricted share Units ("RSUs") pursuant to such Plan.
| 3. | The following is a summary of the Company's stock options and RSUs granted among the various plans:
|  | Year ended December 31, 2017 |
|  | Number of options |  |  | Weighted average exercise price |  |  | Weighted average remaining contractual term (in years) |  |  | Aggregate intrinsic value |
Outstanding at beginning of year |  |  | 7,490,173 |  |  | $ | 3.86 |  |  |  | 4.33 |  |  | $ | 6,003 |
Granted |  |  | 1,269,054 |  |  |  | 2.39 |  |  |  |  |  |  |  |  |
Exercised |  |  | (237,410 | ) |  |  | 1.19 |  |  |  |  |  |  |  |  |
Forfeited or expired |  |  | (581,839 | ) |  |  | 5.15 |  |  |  |  |  |  |  |  |
Outstanding at end of the year |  |  | 7,939,978 |  |  | $ | 3.61 |  |  |  | 3.75 |  |  | $ | 2,839 |
Options exercisable at end of the year |  |  | 4,902,815 |  |  |  | 4.78 |  |  |  | 3.29 |  |  |  | 1,552 |
Vested and expected to vest |  |  | 7,427,645 |  |  |  | 3.73 |  |  |  | 3.68 |  |  |  | 2,654 |
|  | Year ended December 31, 2017 |
|  | Number of RSUs |  |  | Aggregate intrinsic value |
Outstanding at beginning of year |  |  | 47,535 |  |  | $ | 125 |
Granted |  |  | 316,827 |  |  |  |  |
Exercised |  |  | (37,269 | ) |  |  |  |
Forfeited |  |  | - |  |  |  |  |
Outstanding at end of the year |  |  | 327,093 |  |  | $ | 648 |
Vested and expected to vest |  |  | 228,536 |  |  | $ | 453 |
The Company's options are generally granted at exercise prices which are equal to the average market value of the ordinary shares in the period of 30 trading days prior to the grant date. The weighted average grant date fair value of the options granted during 2015, 2016 and 2017 were $ 0.54, $ 0.78 and $ 1.11, respectively. The Company granted 316,827 RSUs in 2017, no RSUs were granted during 2015 and 2016. The aggregate intrinsic value in the table above represents the total intrinsic value (the difference between the Company's closing stock price on the last trading day of the year and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their options on the last day of the year. This amount is impacted by the changes in the fair market value of the Company's shares. Total intrinsic value of options and RSUs exercised during the years ended December 31, 2016 and 2017 were $ 238 and $ 265, respectively. As of December 31, 2017, there was $ 1,629 of total unrecognized compensation cost related to non-vested share-based compensation arrangements granted under the Plan. This cost is expected to be recognized over a weighted-average period of 0.94 years. The following is a summary of the Company's stock options and RSUs granted separated into ranges of exercise price:
Exercise price (range) |  |  | Options and RSUs outstanding as of December 31, 2017 |  |  | Weighted average remaining contractual life (years) |  |  | Weighted average exercise price |  |  | Options and RSUs exercisable as of December 31, 2017 |  |  | Remaining contractual life (years for exercisable options |  |  | Weighted average exercise price |
$ |  |  |  |  |  |  |  |  |  | $ |  |  |  |  |  |  |  |  |  | $ |
RSUs 0.0 |  |  |  | 327,093 |  |  |  | - |  |  |  | 0.00 |  |  |  | - |  |  |  | - |  |  |  | 0.00 |
| 0.01-2.00 |  |  |  | 3,567,235 |  |  |  | 3.64 |  |  |  | 1.18 |  |  |  | 1,946,534 |  |  |  | 3.54 |  |  |  | 1.18 |
| 2.01-4.00 |  |  |  | 2,186,076 |  |  |  | 4.82 |  |  |  | 2.43 |  |  |  | 769,614 |  |  |  | 3.84 |  |  |  | 2.58 |
| 4.01-6.00 |  |  |  | 712,509 |  |  |  | 2.56 |  |  |  | 5.16 |  |  |  | 712,509 |  |  |  | 2.56 |  |  |  | 5.16 |
| 6.01-8.00 |  |  |  | 37,000 |  |  |  | 3.98 |  |  |  | 6.73 |  |  |  | 37,000 |  |  |  | 3.98 |  |  |  | 6.73 |
| 8.01-10.00 |  |  |  | 777,574 |  |  |  | 3.08 |  |  |  | 9.07 |  |  |  | 777,574 |  |  |  | 3.08 |  |  |  | 9.07 |
| 10.01-13.04 |  |  |  | 659,584 |  |  |  | 2.89 |  |  |  | 12.38 |  |  |  | 659,584 |  |  |  | 2.89 |  |  |  | 12.38 |
|  |  |  |  | 8,267,071 |  |  |  |  |  |  |  |  |  |  |  | 4,902,815 |  |  |  |  |  |  |  |  |
The total equity-based compensation expense related to all of the Company's equity-based awards, recognized for the years ended December 31, 2015, 2016 and 2017, was comprised as follows:
|  | Year ended December 31, |
|  | 2015 |  |  | 2016 |  |  | 2017 |
Cost of revenues |  | $ | 73 |  |  | $ | 30 |  |  | $ | 54 |
Research and development |  |  | 736 |  |  |  | 151 |  |  |  | 229 |
Selling and marketing |  |  | 495 |  |  |  | 369 |  |  |  | 292 |
General and administrative |  |  | 321 |  |  |  | 521 |  |  |  | 628 |
Total stock-based compensation expenses |  | $ | 1,625 |  |  | $ | 1,071 |  |  | $ | 1,203 |
| c. | Dividends:
In the event that cash dividends are declared in the future, such dividends will be paid in NIS or in foreign currency subject to any statutory limitations. The Company does not intend to pay cash dividends in the foreseeable future.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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