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Income Taxes (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2017 | Dec. 31, 2020 | Dec. 31, 2019
Federal Income Tax Reporting |  |  |  |  |  |  |
Maximum ownership as a percentage of the voting power or value of the securities of each issuer other than REIT or "TRS" |  |  | 10.00% |  |  |  |
Maximum ownership of securities in all TRS (as a percent) |  |  | 20.00% |  | 25.00% |  |
Maximum ownership of securities in all TRS when considered together with other non-real estate assets (as a percent) |  |  | 25.00% |  |  |  |
Gross amount of NOL of TRS |  |  |  |  |  | $ 4,600,000 | $ 4,400,000
Net operating losses |  |  |  |  |  |  |
Gross amount of NOLs available to company | $ 13,000,000.0 |  | $ 13,000,000.0 |  |  |  |
Income Tax Expense |  |  |  |  |  |  |
Revised Texas Franchise Tax |  |  | 123,000 | $ 132,000 |  |  |
Tax expense | $ 56,000 | $ 64,000 | 123,000 | $ 132,000 |  |  |
Deferred income taxes |  |  | $ 0 |  |  |  |

X
- Definition The portion of the difference between total income tax expense or benefit as reported in the income statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to the Revised Texas Franchise Tax. + References No definition available. + Details
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- Definition Represents the maximum ownership in all Taxable REIT Subsidiaries that can be held by the entity as a percentage of its assets value to maintain its REIT status. + References No definition available. + Details
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- Definition Represents the maximum ownership in all Taxable REIT Subsidiaries that can be held by the entity as a percentage of its assets value when considered together with other non-real estate assets to maintain its REIT status. + References No definition available. + Details
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- Definition Represents the maximum ownership that the entity can hold as a percentage of the voting power or value of the securities of each issuer which is not a REIT or Taxable REIT Subsidiary. + References No definition available. + Details
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