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v3.21.2

Description of Business and Basis of Presentation - (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) a property | Jun. 30, 2021 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2021 USD ($) a property segment | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Nov. 17, 2021 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of business segments | segment |  |  |  |  |  |  |  |  | 2 |  |  |
Net loss attributable to subsidiary | $ (35,000) | $ 14,000 | $ 23,000 | $ (41,000) | $ (42,000) | $ (8,000) | $ (5,000) | $ 107,000 | $ (39,000) | $ 52,000 | $ (383,000) |
Net income (loss) attributable to parent | $ (972,000) | $ 27,119,000 | $ 4,867,000 | $ 3,845,000 | $ 17,204,000 | $ 2,096,000 | $ 3,571,000 | $ 791,000 | 34,859,000 | 23,662,000 | 37,833,000 |
Fine for violation |  |  |  |  |  |  |  |  |  |  |  | $ 50,000,000
Citree |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net loss attributable to subsidiary |  |  |  |  |  |  |  |  | 79,479 | 107,051 | 781,783 |
Net income (loss) attributable to parent |  |  |  |  |  |  |  |  | $ 40,535 | 54,596 | $ 398,709 |
Proceeds from federal relief program |  |  |  |  |  |  |  |  |  | $ 493,000 |  |
Land |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Area of land owned (in acres) | a | 83,000 |  |  |  |  |  |  |  | 83,000 |  |  |
Number of primary classifications | property | 2 |  |  |  |  |  |  |  | 2 |  |  |
Mineral Rights |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Area of land owned (in acres) | a | 90,000 |  |  |  |  |  |  |  | 90,000 |  |  |

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