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Shareholders' Equity (Details) $ / shares in Units, $ in Thousands | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2008 USD ($) shares | Dec. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2019 USD ($) $ / shares shares | Dec. 31, 2018 USD ($) $ / shares | Dec. 31, 2011 ₪ / shares shares
Shareholders' Equity (Details) [Line Items] |  |  |  |  |
Purchased an aggregate amount of ordinary shares (in Shares) | shares | 3,165,092 |  |  |  |
Total consideration | $ 2,800 |  |  |  |
Treasury shares (in Shares) | shares |  | 1,674,184 | 1,763,684 |  |
Treasury value |  | $ 1,143 | $ 1,204 |  |
Dividends paid per share (in Dollars per share) | $ / shares |  | $ 0.24 | $ 0.26 | $ 0.30 |
Paid dividends to shareholders |  | $ 4,800 | $ 5,100 | $ 5,800 |
Options granted exercise price of ordinary shares, description |  |  | 5 years |  |
Compensation costs |  | 213 | $ 200 | 224 |
Total unrecognized compensation costs |  |  | $ 272 |  |
Total compensation cost not yet recognized, weighted average period for recognition |  |  | 1 year 127 days |  |
Total intrinsic value of options exercised |  | 212 | $ 115 | $ 266 |
Aggregate intrinsic value of the outstanding options |  | 687 |  |  |
Aggregate intrinsic value of the exercisable options |  | $ 60 |  |  |
Minimum [Member] |  |  |  |  |
Shareholders' Equity (Details) [Line Items] |  |  |  |  |
Outstanding options granted, vesting period |  |  | 2 years |  |
Maximum [Member] |  |  |  |  |
Shareholders' Equity (Details) [Line Items] |  |  |  |  |
Outstanding options granted, vesting period |  |  | 4 years |  |
2011 Share Incentive Plan [Member] |  |  |  |  |
Shareholders' Equity (Details) [Line Items] |  |  |  |  |
Options granted exercise price of ordinary shares, description |  | In the years ended December 31, 2020 and 2019 and 2018, the options were granted with an exercise price equal to par value of NIS 0.01. |  |  |
2011 Share Incentive Plan [Member] | Israel, New Shekels [Member] |  |  |  |  |
Shareholders' Equity (Details) [Line Items] |  |  |  |  |
Options for ordinary shares (in Shares) | shares |  |  |  |  | 1,800,000
Par value granted to employees (in New Shekels per share) | ₪ / shares |  |  |  |  | ₪ 0.01

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