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Related-Party Transactions - Additional Information (Details) |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Oct. 17, 2017 farm | Apr. 01, 2017 | Sep. 30, 2017 | Sep. 30, 2017 farm officer | Sep. 30, 2016 farm
Related Party Transaction [Line Items] |  |  |  |  |
Number of executive officers that serve as directors | officer |  |  |  | 2 |
Number of farms |  |  |  | 72 | 56
Annual base management fee |  | 2.00% |  |  |
Quarterly base management fee |  | 0.50% |  |  |
Incentive fee |  | 1.75% |  |  |
Annualized incentive fee |  | 7.00% |  |  |
Amount payable to Adviser for quarter exceeding hurdle rate |  | 100.00% |  |  |
Pre-incentive fee hurdle rate |  | 2.1875% |  |  |
Annualized Pre-Incentive Fee FFO hurdle rate |  | 8.75% |  |  |
Amount payable to adviser |  | 20.00% |  |  |
Capital gain fee |  | 15.00% |  |  |
Written notice period for termination |  | 120 days |  |  |
Percentage of independent directors vote required for termination |  | 66.67% |  |  |
Termination fee multiple |  | 300.00% |  |  |
Gladstone Securities | Minimum |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Percentage of financing that will be payable |  | 0.50% | 0.10% | 0.10% |
Gladstone Securities | Maximum |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Percentage of financing that will be payable |  | 1.00% |  |  |
Subsequent event | Subsidiaries | Land Advisers |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Number of farms | 1 |  |  |  |

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- Definition Amount to be paid to adviser in percentage of pre incentive fee condition two. + References No definition available. + Details
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- Definition Annualized incentive fee per advisory agreement. + References No definition available. + Details
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- Definition Incentive fee per advisory agreement. + References No definition available. + Details
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- Definition Maximum annual percentage of stockholders equity to pay full pre incentive fee to adviser. + References No definition available. + Details
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- Definition Pre incentive fee in percentage of common stockholders equity that awards adviser hundred percent of amount of pre incentive fee maximum percentage. + References No definition available. + Details
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