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Business - Additional Information (Detail) - a |  | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 11, 2018 | Jun. 30, 2018 | Dec. 31, 2017 | Oct. 17, 2017
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Number of acres |  | 51,135 |  |
Gladstone Land Limited Partnership |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Company's ownership percent (as percent) |  | 95.70% | 93.20% |
Land Advisers |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Company's ownership percent (as percent) |  | 100.00% |  |
Maryland |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Company re-incorporated date |  | Mar. 24, 2011 |  |
Delaware |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Company re-incorporated date |  | May 25, 2004 |  |
California |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Number of acres |  | 7,465 |  | 169
Ventura County California |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Operating lease, term (in years) | 10 years |  |  |

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- Details
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