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Stockholders Equity (Details Narrative) - USD ($) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020 | Aug. 05, 2020
Dividends declared | $ 427,217 | $ 675,960 |  |
Stock-based compensation expense related to stock options is net of estimated forfeitures | $ 14,000 | $ 17,000 |  |
Stock-based compensation expense related to stock options is net of estimated forfeitures, rate | 16.00% | 1.40% |  |
stock based compensation | $ 481,000 | $ 472,000 |  |
Estimated fair value of unamortized compensation cost related to unvested stock option awards | $ 50,000 |  |  |
Aggregate intrinsic value, Options Outstanding and Options Exercisable | $ 8.54 |  |  |
Average Intrinsic Value, Expired | $ 0 |  |  |
Common stock shares authorized | 20,000,000 |  | 20,000,000 |
Black - Scholes Option Pricing Model [Member] |  |  |  |
Dividend per share | $ 1.66 |  |  |
Plan 2014 Member |  |  |  |
Shares reserved for grants | 556,357 |  |  |
Board Of Directors [Member] | Plan 2014 Member |  |  |  |
Common stock shares authorized | 700,000 |  |  | 1,400,000

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