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Sierra Springs Opportunity Fund Inc. ("SSOF") Investment (Details) |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 09, 2019 USD ($) | Sep. 26, 2019 USD ($) | Dec. 31, 2019 USD ($) shares | Sep. 30, 2020 USD ($) | Sep. 26, 2020 a
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Variable interest entity, ownership percentage |  |  | 9.00% |  |
Variable interest entity shares authorized | shares |  |  | 75,000,000 |  |
Assets held for sale, net (Note 2) |  |  | $ 10,512,066 | $ 6,328,338 |
Impairment expense |  |  | 500,000 |  |
Advances to affiliate |  |  | 0 | 1,315,000 |
Industrial, land and senior water rights |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Area of land | a |  |  |  |  | 98
Commercial land |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Area of land | a |  |  |  |  | 160
Disposal Group, Held-for-sale, Not Discontinued Operations |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Assets held for sale, net (Note 2) |  |  | 10,512,066 | 6,328,338 |
Disposal Group, Held-for-sale, Not Discontinued Operations | DTSS (Land) |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Assets held for sale, net (Note 2) | $ 3,600,000 |  | 3,589,876 | 3,589,876 |
Downtown Silver Springs, LLC Equity Purchase Agreement |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Purchase option, water and sewer rights |  | $ 3,600,000 |  |  |
Percentage of voting interests acquired | 100.00% |  |  |  |
Payments to acquire land | $ 4,100,000 |  |  |  |
Comstock Industrial LLC |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Purchase price |  | $ 6,500,000 |  |  |
Sierra Springs, LLC |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Deposits for investment |  |  | $ 300,000 | $ 300,000 |

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