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Shareholders' Equity | 12 Months Ended
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Dec. 31, 2018
Shareholders' Equity [Abstract] |
Shareholders' Equity | Note 12 - Shareholders’ Equity
| A. | General
The Company shares are traded on the NASDAQ National Market under the symbol of CAMT, and also listed and traded on the Tel-Aviv stock exchange.
| B. | Stock Option Plan
As of December 31, 2018, the Company has one effective Share Incentive Plan (and Sub-Plan for Grantees Subject to Israeli Taxation) for the issuance of options, restricted share units and/ or restricted shares to employees, officers, directors, consultants and other services providers of the Company or any affiliated companies thereof (the “2018 Plan”). The 2018 Plan was adopted by the Company in April 2018 and thereby replaced the Company’s previous equity plans (the “2014 Share Option Plan” and the “2007 Restricted Share Unit Plan”). The total number of equity awards that may be granted under the 2018 Plan during each calendar year is equal to three and a half percent (3.5%) of the Company’s total issued and outstanding Share capital as of the 31st of December of the preceding calendar year. As of the balance sheet date, the number of awards available for grant was 224,428. The fair value of each option award is estimated on the date of grant using the Black-Scholes-Merton option-pricing model that used the weighted average assumptions in the following table and recognized over the vesting period of four years. The risk‑free rate for the expected term of the option is based on the U.S. Treasury yield curve in effect at the time of grant.
| 2017 Grant |  | 2016 Grant
Valuation assumptions: |  |  |
Dividend yield * | 0 |  | 0
Expected volatility | 66% |  | 66%
Risk-free interest rate | 1.87% |  | 1.38%
Expected life (years) ** | 4.8 |  | 4.8
*The option grant was made prior to the dividend distribution. As such, the valuation assumptions reflect the Company’s previous record of not paying dividends. **Expected life for the periods presented was determined according to the simplified method since, at the date of grant, the Company did not have enough history to make an estimate. The total intrinsic value of outstanding options as of December 31, 2018, 2017, and 2016 is $1,886, $3,450 and $1,040, respectively. The total intrinsic value of vested options as of December 31, 2018, 2017, and 2016 is $855, $1,140 and $204 respectively. The total stock option compensation expense related to continued operations amounted to $402, $634, and $429 in 2018, 2017 and 2016, respectively. As of December 31, 2018, there was $335 of total unrecognized compensation cost related to non-vested share-based compensation arrangements. That cost is expected to be recognized over a weighted-average period of 2.54 years. Share option activity during the past three years is as follows:
|  | Year Ended December 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
|  |  |  |  | Weighted |  |  |  |  |  | Weighted |  |  |  |  |  | Weighted |
|  | Number |  |  | average |  |  | Number |  |  | average |  |  | Number |  |  | average |
|  | of |  |  | exercise |  |  | of |  |  | exercise |  |  | of |  |  | exercise |
|  | options |  |  | price US$ |  |  | options |  |  | price US$ |  |  | options |  |  | price US$ |
Outstanding at January 1 |  |  | 1,173,433 |  |  |  | 2.80 |  |  |  | 1,653,434 |  |  |  | 2.82 |  |  |  | 1,151,121 |  |  |  | 3.28 |
Granted |  |  | - |  |  |  | - |  |  |  | 154,600 |  |  |  | 2.75 |  |  |  | 527,500 |  |  |  | 1.92 |
Forfeited and cancelled |  |  | (43,159 | ) |  |  | 2.53 |  |  |  | (152,698 | ) |  |  | 2.77 |  |  |  | (25,187 | ) |  |  | 5.00 |
Exercised |  |  | (610,489 | ) |  |  | 2.79 |  |  |  | (481,903 | ) |  |  | 2.87 |  |  |  | - |  |  |  | 0.00 |
Outstanding at year end |  |  | 519,785 |  |  |  | 3.16 |  |  |  | 1,173,433 |  |  |  | 2.80 |  |  |  | 1,653,434 |  |  |  | 2.82 |
Vested at year end |  |  | 217,976 |  |  |  | 2.85 |  |  |  | 490,086 |  |  |  | 3.36 |  |  |  | 725,466 |  |  |  | 3.32 |
|  |  |  |  |  |  |  | Weighted |  |  | Aggregate |
|  | Number |  |  | Weighted |  |  | Average |  |  | intrinsic |
|  | of |  |  | average |  |  | Remaining |  |  | Value (in |
|  | options |  |  | exercise |  |  | Contractual |  |  | US$ |
|  | outstanding |  |  | price US$ |  |  | term (years) |  |  | thousands) |
Outstanding as of December 31, 2018 |  |  | 519,785 |  |  |  | 3.16 |  |  |  | 4.14 |  |  |  | 1,886 |
Vested and expected to vest at December 31, 2018 |  |  | 508,684 |  |  |  | 3.16 |  |  |  | 4.14 |  |  |  | 1,846 |
Exercisable at December 31, 2018 |  |  | 217,976 |  |  |  | 2.85 |  |  |  | 3.14 |  |  |  | 855 |
The following table summarizes information about share options at December 31, 2018:
|  |  |  |  |  |  |  | Weighted |
|  |  |  |  |  |  |  | average |
|  |  |  |  |  |  |  | remaining |
|  |  |  |  |  |  |  | Contractual term |
|  | Number of |  |  |  |  |  | (years) |
|  | outstanding |  |  | Number |  |  | of outstanding |
Exercise price US$ |  | options |  |  | exercisable |  |  | options |
0-2 |  |  | 179,154 |  |  |  | 73,797 |  |  |  | 4.22 |
2-5 |  |  | 340,631 |  |  |  | 144,179 |  |  |  | 4.10 |
|  |  | 519,785 |  |  |  | 217,976 |  |  |  | 4.14 |
The following table summarizes information about non-vested options at December 31, 2018:
|  |  |  |  | Weighted |
|  |  |  |  | average |
|  |  |  |  | grant- date |
|  | Options |  |  | fair value |
Balance at January 1, 2018 |  |  | 683,347 |  |  |  | 1.58 |
Granted |  |  | - |  |  |  | - |
Vested |  |  | (348,962 | ) |  |  | 1.32 |
Forfeited |  |  | (32,576 | ) |  |  | 1.45 |
Balance at December 31, 2018 |  |  | 301,809 |  |  |  | 2.04 |
| C. | Restricted Share Unit Plan
In April 2018, the Company adopted a Restricted Share Unit (“RSU”) Plan (the “Plan”) to replace the 2007 Restricted Share Unit Plan, pursuant to which the Company’s Board of Directors may grant shares to officers and key employees. The total number of shares, which may be granted to directors, officers, employees and consultants under this Plan, is limited to 3.5% out of the outstating shares (1,275,507 as of December 31, 2018). Forfeited units are returned to the pool. The exercise price for each grantee shall be as determined by the Board and specified in the applicable RSU notice of grant; provided, however, that unless otherwise determined by the Board (which determination shall not require shareholder approval unless so required in order to comply with Mandatory Law), the exercise price shall be no more than the underlying share’s nominal value. For the removal of any doubt, the Board is authorized (without the need for shareholder approval unless so required in order to comply with Mandatory Law) to determine that the exercise price of an RSU is to be $0.00. Unless otherwise determined by the Board with respect to any specific grantee or to any specific grant, (which determination shall not require shareholder approval unless so required in order to comply with Mandatory Law) and provided accordingly in the applicable RSU notice of grant, the RSUs shall vest (become automatically exercised) according to the vesting schedules as determined by the Board. The following table summarizes information about RSUs at December 31, 2018:
|  | RSUs |
Balance at January 1, 2018 |  |  | 86,500 |
Granted |  |  | 1,051,054 |
Forfeited |  |  | (2,700 | )
Balance at December 31, 2018 |  |  | 1,134,854 |
The total compensation cost recognized in the year ending December 31, 2018, amounted to $1,271. The unrecognized compensations in the amount of $7,559 will be recognized in the years 2019 to 2022 As of the balance sheet date the number of RSU’s available for grant was 224,428.
| D. | Dividend
On May 30, 2018, the Company paid a dividend of $0.14 per share, totaling $5.1 million. On November 30, 2017, the Company paid a dividend of $0.14 per share, totaling $5 million.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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