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Employee Stock Compensation Plans (Details Narrative) - USD ($) | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 20, 2023 | Dec. 31, 2022 | Jun. 18, 2013
Unrecognized Stock Option Compensation Cost Related To Non-vested Options | $ 492,000 |  | $ 492,000 |  |  |  |
Unrecognized Stock Option Compensation Cost Related To Non-vested Options, Period Of Recognition |  |  |  | 26 months |  |  |
Stock options exercised for cash |  |  | 14,000 | $ 20,000 |  |  |
General and Administrative Expense [Member] |  |  |  |  |  |  |
Stock option expense | $ 59,000 | $ 13,000 | $ 126,000 | $ 26,000 |  |  |
2013 Plan [Member] |  |  |  |  |  |  |
Options outstanding, exercisable | 5,340,000 |  | 5,340,000 |  |  | 5,390,000 |
Stock Option Exercised In Period, Shares | 50,000 | 8,750 | 50,000 | 81,750 |  |  |
Common stock, capital shares reserved for future issuance |  |  |  |  | 5,000,000 |  | 5,750,000
Stock options exercised for cash | $ 14,000 | $ 1,000 | $ 14,000 | $ 20,000 |  |  |
Intrinsic value | $ 15,000 | $ 5,000 | $ 15,000 | $ 44,000 |  |  |
Exercise price Per Share | $ 0.28 | $ 0.20 | $ 0.28 | $ 0.25 |  |  |
2013 Plan [Member] | Minimum [Member] |  |  |  |  |  |  |
Exercise price | 0.20 |  | 0.20 |  |  |  |
2013 Plan [Member] | Maximum [Member] |  |  |  |  |  |  |
Exercise price | $ 0.60 |  | $ 0.60 |  |  |  |

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