XML 60 R49.htm IDEA: XBRL DOCUMENT
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Subsequent Events - Additional Information (Detail) |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 17, 2017 USD ($) farm | Oct. 13, 2017 USD ($) shares | Oct. 06, 2017 shares | Oct. 02, 2017 USD ($) a option farm | Sep. 20, 2017 shares | Nov. 07, 2017 USD ($) $ / shares shares | Sep. 30, 2017 a shares | Sep. 30, 2017 USD ($) a farm shares | Sep. 30, 2016 a farm
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Number of farms | farm |  |  |  |  |  |  |  | 72 | 56
Area of real estate property (in acres) | a |  |  |  |  |  |  | 61,794 | 61,794 | 33,800
ATM Program |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Sale of common stock sold under sale agreement (in shares) | shares |  |  |  |  |  |  | 434,401 | 434,401 |
Limited Partner | Gladstone Land Limited Partnership |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
OP units redeemed (in shares) | shares |  |  |  |  | 221,875 |  |  |  |
2017 New Real Estate Activity |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Number of farms | farm |  |  |  |  |  |  |  | 14 |
Area of real estate property (in acres) | a |  |  |  |  |  |  | 11,202 | 11,202 |
Price of acquisition |  |  |  |  |  |  |  | $ 121,847,000 |
Subsequent event | ATM Program |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Sale of common stock sold under sale agreement (in shares) | shares |  | 121,875 |  |  |  | 31,038 |  |  |
Average sales price of common stock sold (in dollars per share) | $ / shares |  |  |  |  |  | $ 13.39 |  |  |
Gross proceeds from issuance of common stock |  |  |  |  |  | $ 416,000 |  |  |
Proceeds from issuance of common stock |  |  |  |  |  | $ 409,000 |  |  |
Subsequent event | Limited Partner | Gladstone Land Limited Partnership |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
OP units redeemed (in shares) | shares |  |  | 121,875 |  |  |  |  |  |
Subsequent event | Term loan | Rabo Agrifinance LLC Loan |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from notes payable |  | $ 540,000 |  |  |  |  |  |  |
Interest rate (as percent) |  | 4.59% |  |  |  |  |  |  |
Subsequent event | Unsecured promissory note | TRS |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Interest rate (as percent) | 5.00% |  |  |  |  |  |  |  |
Face amount of debt | $ 1,700,000.0 |  |  |  |  |  |  |  |
Subsequent event | 2017 New Real Estate Activity | Baca County, Colorado |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Number of farms | farm |  |  |  | 1 |  |  |  |  |
Area of real estate property (in acres) | a |  |  |  | 1,280 |  |  |  |  |
Price of acquisition |  |  |  | $ 900,000 |  |  |  |  |
Lease expiration period |  |  |  | 4 years |  |  |  |  |
Number of renewal options | option |  |  |  | 1 |  |  |  |  |
Renewal term |  |  |  | 5 years |  |  |  |  |
Annualized straight-line cash rent |  |  |  | $ 52,000 |  |  |  |  |
Subsidiaries | Subsequent event | TRS |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Number of farms | farm | 1 |  |  |  |  |  |  |  |
Reduction in lease term | 2 years |  |  |  |  |  |  |  |

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