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v3.19.1

Related-Party Transactions - Additional Information (Details) |  |  | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 10, 2018 | Apr. 01, 2017 | Mar. 31, 2019 USD ($) a officer | Mar. 31, 2018 USD ($) a | Dec. 31, 2018 USD ($) | Jul. 31, 2018 a | Jun. 11, 2018 | Oct. 17, 2017 USD ($) a
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Administration fee |  |  | $ 306,000 |  | $ 340,000 |  |  |
Number of executive officers that serve as directors | officer |  |  | 2 |  |  |  |  |
Management fee (as percent) |  | 2.00% |  |  |  |  |  |
Hurdle rate, quarterly (as percent) |  | 1.75% |  |  |  |  |  |
Hurdle rate, annual (as percent) |  | 7.00% |  |  |  |  |  |
Pre-Incentive Fee FFO (as percent) |  | 100.00% |  |  |  |  |  |
Pre-Incentive Fee, exceeded (as percent) |  | 2.1875% |  |  |  |  |  |
Pre-Incentive Fee, exceeded, annual (as percent) |  | 8.75% |  |  |  |  |  |
Pre-Incentive Fee (as percent) |  | 20.00% |  |  |  |  |  |
Base management fee, quarterly (as percent) |  | 0.50% |  |  |  |  |  |
Base management fee, waiver credit granted by related party |  |  | $ 568,700 |  |  |  |  |
Cumulative realized capital gains (as percent) |  | 15.00% |  |  |  |  |  |
Credits to fees from adviser |  |  | 569,000 | $ 0 |  |  |  |
Administration fee |  |  | 306,000 | 274,000 |  |  |  |
Base management fee |  |  | $ 905,000 | $ 656,000 |  |  |  |
Total Acres | a |  |  | 73,900 | 63,351 |  |  |  |
Selling commissions and dealer-manager fees, paid to third parties to date, percentage |  |  | 93.90% |  |  |  |  |
Gladstone Securities |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Administration fee |  |  | $ 2,000 |  |  |  |  |
Financing fee (as percent) |  |  | 0.12% |  |  |  |  |
Taxable REIT Subsidiary |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Administration fee |  |  | $ 9,000 |  |  |  |  |
Administration fee |  |  | 12,000 | $ 12,000 |  |  |  |
Base management fee |  |  | 66,000 |  |  |  |  |
Preferred Stock | Series B Preferred Stock |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Selling commission fee (as percent) | 7.00% |  |  |  |  |  |  |
Dealer-manager fee (as percent) | 3.00% |  |  |  |  |  |  |
Payment of management fees |  |  | 1,654,000 |  |  |  |  |
Ventura County California |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Operating lease, term (in years) |  |  |  |  |  |  | 10 years |
Total Acres | a |  |  |  |  |  | 169 |  | 169
Land Advisers | Taxable REIT Subsidiary |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Base management fee |  |  |  | $ 66,000 |  |  |  |
Land Advisers | Unsecured Debt [Member] |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Face amount of debt |  |  |  |  |  |  |  | $ 1,700,000
Stated interest rate (as percent) |  |  |  |  |  |  |  | 5.00%
Gladstone Securities |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Payment of management fees |  |  | $ 1,557,000 |  |  |  |  |
Gladstone Securities | Minimum | Gladstone Securities |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Financing fee (as percent) |  |  | 0.50% |  |  |  |  |
Gladstone Securities | Maximum | Gladstone Securities |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Financing fee (as percent) |  |  | 1.00% |  |  |  |  |

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