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Equity - Additional Information (Details) |  |  |  |  | 1 Months Ended | 9 Months Ended | 12 Months Ended | 36 Months Ended | 45 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 09, 2022 $ / shares shares | Jan. 13, 2021 shares | Apr. 03, 2020 $ / shares shares | Apr. 01, 2020 USD ($) security | Jan. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2023 USD ($) $ / shares shares | Dec. 31, 2023 USD ($) $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2023 USD ($) $ / shares shares | Apr. 13, 2023 USD ($) | Aug. 24, 2022 shares | May 12, 2020 USD ($)
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) | 16,000,000 | 3,600,000 |  |  |  | 48,043,098 | 48,043,098 | 47,992,588 |  | 47,992,588 | 48,043,098 |  |  |
Common stock, shares issued (in shares) |  |  |  |  |  | 35,838,442 | 35,838,442 | 35,050,397 |  | 35,050,397 | 35,838,442 |  |  |
Write-off of unamortized deferred offering costs associated with cumulative redeemable preferred stock (Series C) | $ |  |  |  |  |  |  | $ 0 | $ 798,000 | $ 0 |  |  |  |  |
Common stock, conversion ratio |  |  |  |  |  | 1 | 1 |  |  |  | 1 |  |  |
Term preferred stock, fair value | $ |  |  |  |  |  |  |  | $ 7,700,000 | $ 4,000,000 | $ 7,700,000 |  |  |  |
Weighted-average issuance price (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 37.45 | $ 19.42 |  |  |  |  |
Gladstone Land Limited Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating partnership units held outside (in shares) |  |  |  |  |  |  | 0 | 0 | 204,778 |  |  |  |  |
Operating partnership units redeemed (in shares) |  |  |  |  |  |  |  | 204,778 |  |  |  |  |  |
OP Unit Holder |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's ownership percent |  |  |  |  |  | 100.00% | 100.00% | 100.00% | 99.40% | 100.00% | 100.00% |  |  |
Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of securities allowed for issuance | $ |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  | $ 1,500,000,000 |  |
Maximum number of securities that can be sold (in securities) | security |  |  |  | 2 |  |  |  |  |  |  |  |  |  |
Preferred Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  | 124,460 | 124,460 |  |  |  | 124,460 |  |  |
Common Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of preferred and common equity | $ |  |  |  |  |  | $ 2,200,000 |  |  |  |  | $ 280,900,000 |  |  |
Common stock, shares issued (in shares) |  |  |  |  |  | 14,367,524 | 14,367,524 |  |  |  | 14,367,524 |  |  |
Series D Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |
Stock authorized and unissued (in shares) | 1,185,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  | 2,415,000 | 2,415,000 | 2,415,000 | 2,415,000 |  | 2,415,000 | 2,415,000 |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  | $ 0.001 | $ 0.001 | $ 0.001 | $ 0.001 |  | $ 0.001 | $ 0.001 |  |  |
Preferred stock, shares authorized (in shares) |  |  |  |  |  | 3,600,000 | 3,600,000 | 3,600,000 |  | 3,600,000 | 3,600,000 |  |  |
Series D Preferred Stock | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of preferred and common equity | $ |  |  |  |  | $ 58,300,000 |  |  |  |  |  |  |  |  |
Series D Preferred Stock | Preferred Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of preferred and common equity | $ |  |  |  |  |  |  |  |  |  |  | $ 60,400,000 |  |  |
Series D Preferred Stock | Common Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  | 2,415,000 | 2,415,000 |  |  |  | 2,415,000 |  |  |
Series C Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock authorized and unissued (in shares) | 15,551,347 |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  | 10,156,509 | 10,156,509 | 10,191,353 |  | 10,191,353 | 10,156,509 |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  | $ 0.001 | $ 0.001 | $ 0.001 |  | $ 0.001 | $ 0.001 |  |  |
Preferred stock, shares authorized (in shares) |  |  |  |  |  | 25,902,437 | 25,902,437 | 25,951,347 |  | 25,951,347 | 25,902,437 |  |  |
Redemption of preferred stock | $ |  |  |  |  |  |  | $ 1,156,000 | $ 901,000 | $ 248,000 |  |  |  |  |
Series C Preferred Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  | 10,254,072 | 10,254,072 |  |  |  | 10,254,072 |  |  |
Series C Preferred Stock | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  | 6.00% |  |  |  |  |  |  |  |  |  |  |
Maximum amount authorized in Primary Offering (in shares) |  |  | 26,000,000 |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  | $ 0.001 |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized (in shares) |  |  | 20,000,000 |  |  |  |  | 10,200,000 |  | 10,200,000 |  |  | 10,200,000 |
Average sales price of common stock sold (in dollars per share) | $ / shares |  |  | $ 25.00 |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized, pursuant to DRIP (in shares) |  |  | 6,000,000 |  |  |  |  |  |  |  |  |  | 200,000 |
Sale of stock pursuant to DRIP (in dollars per share) | $ / shares |  |  | $ 22.75 |  |  |  |  |  |  |  |  |  |  |
Write-off of unamortized deferred offering costs associated with cumulative redeemable preferred stock (Series C) | $ |  |  |  |  |  |  |  | $ 798,000 |  |  |  |  |  |
Gross proceeds | $ |  |  |  |  |  |  |  | $ 165,941,000 | $ 59,720,000 | $ 252,600,000 |  |  |  |
Consideration received, net | $ |  |  |  |  |  |  |  |  |  | $ 230,500,000 |  |  |  |
Redemptions of Series B Preferred Stock (in shares) |  |  |  |  |  |  | 48,913 | 38,595 | 9,920 |  |  |  |  |
Redemption of preferred stock | $ |  |  |  |  |  |  | $ 1,200,000 | $ 901,000 | $ 248,000 |  |  |  |  |
Series C Preferred Stock | Common Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of preferred and common equity | $ |  |  |  |  |  |  |  |  |  |  | $ 253,900,000 |  |  |
Series E Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  | 235,841 | 235,841 | 16,000,000 |  | 16,000,000 | 235,841 |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  | $ 0.001 | $ 0.001 | $ 0.001 |  | $ 0.001 | $ 0.001 |  |  |
Preferred stock, shares authorized (in shares) |  |  |  |  |  | 15,998,400 | 15,998,400 | 16,000,000 |  | 16,000,000 | 15,998,400 |  |  |
Redemption of preferred stock | $ |  |  |  |  |  |  | $ 36,000 |  |  |  |  |  |  |
Series E Preferred Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  | 159,600 | 159,600 |  |  |  | 159,600 |  |  |
Series E Preferred Stock | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum amount authorized in Primary Offering (in shares) | 8,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares | $ 0.001 |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized (in shares) | 8,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Average sales price of common stock sold (in dollars per share) | $ / shares | $ 25.00 |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds | $ |  |  |  |  |  |  | $ 5,925,000 |  |  |  |  |  |  |
Redemptions of Series B Preferred Stock (in shares) |  |  |  |  |  |  | 1,600 |  |  |  |  |  |  |
Redemption of preferred stock | $ |  |  |  |  |  |  | $ 36,000 |  |  |  |  |  |  |
Series E Preferred Stock | Preferred Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  | 77,841 | 77,841 |  |  |  | 77,841 |  |  |
Proceeds from issuance of preferred and common equity | $ |  |  |  |  |  | $ 4,000,000 | $ 1,900,000 |  |  |  |  |  |  |
Common Stock | ATM Program |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds | $ |  |  |  |  |  |  | $ 15,240,000 | $ 22,242,000 | $ 173,428,000 |  |  |  |  |
Common stock, value authorized | $ |  |  |  |  |  |  |  |  |  |  |  | $ 500,000,000 |  | $ 260,000,000

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