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Equity - Consultant Stock Plan - Activity (Details) - USD ($) | 3 Months Ended | 12 Months Ended | 13 Months Ended
--- | --- | --- | ---
Sep. 30, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2021 | Sep. 30, 2020 | Aug. 31, 2019
Shares issued for services (in dollars per share) |  | $ 2.00 | $ 1.03 |  |  |
Consultant Plan [Member] |  |  |  |  |  |
Reserved but unissued shares under the Consultant Plan at January 1 |  | 190,142 | 199,705 |  |  |
Increases in the number of authorized shares under the Consultant Plan |  | 33,384 | 437 |  |  |
Stock grants |  | (11,250) | (10,000) |  |  |
Reserved but unissued shares under the Consultant Plan at Period End |  | 212,276 | 190,142 |  |  |
Shares issued for services (in shares) |  |  |  |  | 10,000 |
Shares issued for services (in dollars per share) |  | $ 1.03 | $ 1.03 |  |  |
Allocated Share-based Compensation Expense |  | $ 17,000 | $ 14,000 |  |  |
Fair value of stock options issued for board service |  | 10,000 |  |  |  |
Consultant Plan [Member] | General and administrative |  |  |  |  |  |
Allocated Share-based Compensation Expense |  | $ 8,000 | $ 3,000 |  |  |
Shares expensed in period |  | 7,500 | 2,500 |  |  |
Consultant Plan [Member] | Consultant, Two |  |  |  |  |  |
Shares issued for services (in dollars per share) |  | $ 2.33 |  |  |  |
Fair value of stock options issued for board service |  | $ 35,000 |  |  |  |
Consultant Plan [Member] | Consultant, Two | Forecast |  |  |  |  |  |
Shares issued for services (in shares) |  |  |  | 15,000 |  |
Consultant Plan [Member] | Consultant, Two | General and administrative |  |  |  |  |  |
Allocated Share-based Compensation Expense |  | $ 9,000 |  |  |  |
Shares expensed in period |  | 3,750 |  |  |  |
Consultant Plan [Member] | Consultant, Three |  |  |  |  |  |
Shares issued for services (in shares) |  |  |  |  |  | 10,000
Shares issued for services (in dollars per share) |  |  | $ 1.44 |  |  |
Fair value of stock options issued for board service |  |  | $ 14,000 |  |  |
Consultant Plan [Member] | Consultant, Three | General and administrative |  |  |  |  |  |
Allocated Share-based Compensation Expense | $ 11,000 |  |  |  |  |
Shares expensed in period | 7,500 |  |  |  |  |

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