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Stockholders Equity (Details Narrative) - USD ($) | 6 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 15, 2022 | Dec. 31, 2021 | Aug. 05, 2020
Dividends declared | $ 851,266 | $ 854,272 |  |  |
Stock based compensation for stock options | 2,000 | 14,000 |  |  |
Share-based compensation under offering | 5,000 | 0 |  |  |
Stock based compensation for grants | 479,000 | 472,000 |  |  |
Stock-based compensation expense | $ 8,000 | 29,000 |  |  |
Shares reserved for grants | 352,066 |  |  |  |
Weighted-average vesting period | 2 months 26 days |  |  |  |
Fair value of unamortized compensation cost | $ 2,000 |  |  |  |
Maximum share purchase under ESPP | 750,000 |  |  |  |
Maximum share purchased by employee | 5,000 |  |  |  |
Closing price of common stock | $ 3.94 |  |  |  |
Common stock shares authorized | 20,000,000 |  |  | 20,000,000 |
Grant [Member] |  |  |  |  |
Stock-based compensation expense | $ 998,000 | 952,000 |  |  |
2021/2022 Offering [Member] |  |  |  |  |
Stock-based compensation expense | $ 11,000 | $ 0 |  |  |
Board Of Directors [Member] | February 2, 2022 [Member] |  |  |  |  |
Dividend per share |  |  | $ 0.04 |  |
Held-to-Maturity Securities US Treasury Securities [Member] |  |  |  |  |
Common stock shares authorized | 700,000 |  |  |  | 1,400,000

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