XML 76 R60.htm IDEA: XBRL DOCUMENT
v3.22.4

Equity - Additional Information (Detail) |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended | 33 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 09, 2022 $ / shares shares | Jan. 13, 2021 shares | Apr. 03, 2020 $ / shares shares | Apr. 01, 2020 USD ($) security | Mar. 09, 2020 USD ($) shares | Feb. 20, 2020 shares | May 31, 2018 USD ($) $ / shares shares | Jan. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Aug. 24, 2022 shares | May 18, 2021 USD ($) | May 12, 2020 USD ($) | Aug. 07, 2015 USD ($)
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock authorized and unissued (in shares) |  |  |  |  |  | 26,000,000 |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) | 16,000,000 | 3,600,000 |  |  |  |  |  |  | 47,992,588 | 63,953,993 |  | 47,992,588 |  |  |  |
Proceeds from issuance of preferred and common equity | $ |  |  |  |  |  |  |  |  | $ 188,106,000 | $ 233,393,000 | $ 130,348,000 | $ 267,800,000 |  |  |  |
Common stock, shares issued (in shares) |  |  |  |  |  |  |  |  | 35,050,397 | 34,210,013 |  | 35,050,397 |  |  |  |
Common stock, conversion ratio |  |  |  |  |  |  |  |  | 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 |  |  |  |  |  |
Partners' capital account (in shares) |  |  |  |  |  |  |  |  |  |  | 288,303 |  |  |  |  |
OP Unit Holder |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company's ownership percent |  |  |  |  |  |  |  |  | 100.00% | 99.40% | 100.00% | 100.00% |  |  |  |
Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities allowed for issuance (amount up to) | $ |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of securities that can be sold (in securities) | security |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |
Common Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares issued (in shares) |  |  |  |  |  |  |  |  | 13,703,939 |  |  | 13,703,939 |  |  |  |
Gladstone Land Limited Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
OP units held by non-controlling limited partners (in shares) |  |  |  |  |  |  |  |  | 0 | 204,778 | 0 |  |  |  |  |
Operating partnership units redeemed |  |  |  |  |  |  |  |  |  | 204,778 |  |  |  |  |  |
Series C Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock authorized and unissued (in shares) | 15,551,347 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  |  |  |  | 10,191,353 | 3,493,333 |  | 10,191,353 |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 0.001 | $ 0.001 |  | $ 0.001 |  |  |  |
Preferred stock, shares authorized (in shares) |  |  |  |  |  |  |  |  | 25,951,347 | 25,989,942 |  | 25,951,347 |  |  |  |
Redemption of preferred stock | $ |  |  |  |  |  |  |  |  | $ 901,000 | $ 248,000 | $ 3,000 |  |  |  |  |
Series C Preferred Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  |  |  |  | 10,240,006 |  |  | 10,240,006 |  |  |  |
Series C Preferred Stock | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  | 6.00% |  |  | 6.00% |  |  |  |  |  |  |  |  |  |
Securities allowed for issuance (amount up to) | $ |  |  |  |  |  |  |  |  | $ 252,600,000 |  |  | $ 252,600,000 |  |  |  |
Maximum amount authorized in Primary Offering (in shares) |  |  | 26,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  | $ 0.001 |  |  |  |  |  |  |  |  |  |  |  |  |
Average sales price of common stock sold (in dollars per share) | $ / shares |  |  | $ 25.00 |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds | $ |  |  |  |  |  |  |  |  | $ 165,941,000 | $ 59,720,000 | $ 26,987,000 |  |  |  |  |
Preferred stock, shares authorized (in shares) |  |  | 20,000,000 |  |  |  |  |  | 10,200,000 |  |  | 10,200,000 | 10,200,000 |  |  |
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 |  |  |  |  |  |  |  |  |  |  |  |  |
Redemptions of Series B Preferred Stock (in shares) |  |  |  |  |  |  |  |  | 38,595 | 9,920 | 138 |  |  |  |  |
Redemption of preferred stock | $ |  |  |  |  |  |  |  |  | $ 901,000 | $ 248,000 | $ 3,000 |  |  |  |  |
Consideration received, net | $ |  |  |  |  |  |  |  |  | 230,500,000 |  |  |  |  |  |  |
Write-off of unamortized deferred offering costs associated with cumulative redeemable preferred stock (Series C) | $ |  |  |  |  |  |  |  |  | $ 798,000 |  |  |  |  |  |  |
Number of Shares Sold (in shares) |  |  |  |  |  |  |  |  | 6,701,987 | 2,407,027 | 1,088,315 |  |  |  |  |
Weighted-average offering price per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 24.76 | $ 24.81 | $ 24.80 |  |  |  |  |
Costs incurred | $ |  |  |  |  |  |  |  |  | $ 152,470,000 | $ 54,760,000 | $ 24,759,000 |  |  |  |  |
Series C Preferred Stock | Common Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of preferred and common equity | $ |  |  |  |  |  |  |  |  |  |  |  | $ 253,600,000 |  |  |  |
Series D Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock authorized and unissued (in shares) | 1,185,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  |  |  | 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 |  |  |  |
Preferred stock, shares authorized (in shares) |  |  |  |  |  |  |  |  | 3,600,000 | 3,600,000 |  | 3,600,000 |  |  |  |
Series D Preferred Stock | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale 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 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of preferred and common equity | $ |  |  |  |  |  |  |  |  |  |  |  | $ 60,400,000 |  |  |  |
Series D Preferred Stock | Common Stock | Registration Statement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  |  |  |  | 2,415,000 |  |  | 2,415,000 |  |  |  |
Series E Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  |  |  |  | 0 | 0 |  | 0 |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 0.001 | $ 0.001 |  | $ 0.001 |  |  |  |
Preferred stock, shares authorized (in shares) |  |  |  |  |  |  |  |  | 16,000,000 | 0 |  | 16,000,000 |  |  |  |
Series E Preferred Stock | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale 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 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average sales price of common stock sold (in dollars per share) | $ / shares | $ 25.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized (in shares) | 8,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average offering price per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 26.47 | $ 21.70 | $ 14.82 |  |  |  |  |
Common stock, value authorized | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 260,000,000 |
Common Stock | Follow-on Offerings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds | $ |  |  |  |  |  |  |  |  |  |  | $ 27,300,000 |  |  |  |  |
Number of Shares Sold (in shares) |  |  |  |  |  |  |  |  |  |  | 1,897,500 |  |  |  |  |
Weighted-average offering price per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 14.40 |  |  |  |  |
Costs incurred | $ |  |  |  |  |  |  |  |  |  |  | $ 26,100,000 |  |  |  |  |
Common Stock | ATM Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds | $ |  |  |  |  |  |  |  |  | $ 22,242,000 | $ 173,428,000 | $ 45,883,000 |  |  |  |  |
Number of Shares Sold (in shares) |  |  |  |  |  |  |  |  | 840,384 | 7,990,994 | 3,096,558 |  |  |  |  |
Costs incurred | $ |  |  |  |  |  |  |  |  | $ 21,993,000 | $ 171,693,000 | $ 45,424,000 |  |  |  |  |
Common stock, value authorized | $ |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 160,000,000 | $ 100,000,000 | $ 30,000,000
Series B Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  |  |  |  |  | 5,956,065 | 5,956,065 |  | 5,956,065 |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 0.001 | $ 0.001 |  | $ 0.001 |  |  |  |
Preferred stock, shares authorized (in shares) |  |  |  |  |  |  |  |  | 6,456,065 | 6,456,065 |  | 6,456,065 |  |  |  |
Redemption of preferred stock | $ |  |  |  |  |  |  |  |  |  |  | $ 681,000 |  |  |  |  |
Series B Preferred Stock | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate |  |  |  |  |  |  | 6.00% |  |  |  |  |  |  |  |  |
Securities allowed for issuance (amount up to) | $ |  |  |  |  |  |  | $ 150,000,000 |  |  |  |  |  |  |  |  |
Maximum amount authorized in Primary Offering (in shares) |  |  |  |  |  |  | 6,000,000 |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.001 |  |  |  |  |  |  |  |  |
Average sales price of common stock sold (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 25.00 |  |  |  |  |  |  |  |  |
Redemptions of Series B Preferred Stock (in shares) |  |  |  |  |  |  |  |  |  |  | 29,355 |  |  |  |  |
Series B Preferred Stock | Preferred Stock | Series B Termination |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities allowed for issuance (amount up to) | $ |  |  |  |  | $ 147,500,000 |  |  |  |  |  |  |  |  |  |  |
Maximum amount authorized in Primary Offering (in shares) |  |  |  |  | 6,000,000 |  |  |  |  |  |  |  |  |  |  |
Gross proceeds | $ |  |  |  |  | $ 133,400,000 |  |  |  |  |  |  |  |  |  |  |

X
- Definition Common Stock, Conversion Ratio + References No definition available. + Details
Name: | land_CommonStockConversionRatio
Namespace Prefix: | land_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Common Stock Value Authorized Under Equity Offering Program + References No definition available. + Details
Name: | land_CommonStockValueAuthorizedUnderEquityOfferingProgram
Namespace Prefix: | land_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum Amount Of Securities Can Be Sold Under Shelf Registration Statement + References No definition available. + Details
Name: | land_MaximumAmountOfSecuritiesCanBeSoldUnderShelfRegistrationStatement
Namespace Prefix: | land_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum Number Of Securities Can Be Sold Under Shelf Registration Statement + References No definition available. + Details
Name: | land_MaximumNumberOfSecuritiesCanBeSoldUnderShelfRegistrationStatement
Namespace Prefix: | land_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Operating partnership units held outside. + References No definition available. + Details
Name: | land_OperatingPartnershipUnitsHeldOutside
Namespace Prefix: | land_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Operating Partnership Units Redeemed + References No definition available. + Details
Name: | land_OperatingPartnershipUnitsRedeemed
Namespace Prefix: | land_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Partners' Capital Account, Units Issued + References No definition available. + Details
Name: | land_PartnersCapitalAccountUnitsIssued
Namespace Prefix: | land_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Partners' Capital Account, Weighted-Average Issuance Price + References No definition available. + Details
Name: | land_PartnersCapitalAccountWeightedAverageIssuancePrice
Namespace Prefix: | land_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Preferred Stock, Shares Authorized, Dividend Reinvestment Plan + References No definition available. + Details
Name: | land_PreferredStockSharesAuthorizedDividendReinvestmentPlan
Namespace Prefix: | land_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Sale of Stock, Consideration Received, Net + References No definition available. + Details
Name: | land_SaleOfStockConsiderationReceivedNet
Namespace Prefix: | land_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Sale of Stock, Price Per Share, Dividend Reinvestment Plan + References No definition available. + Details
Name: | land_SaleOfStockPricePerShareDividendReinvestmentPlan
Namespace Prefix: | land_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Sale of Stock, Consideration Received on Transaction, Gross + References No definition available. + Details
Name: | land_SaleofStockConsiderationReceivedonTransactionGross
Namespace Prefix: | land_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sale of Stock, Weighted Average Price Per Share + References No definition available. + Details
Name: | land_SaleofStockWeightedAveragePricePerShare
Namespace Prefix: | land_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of Securities Allowed For Issuance + References No definition available. + Details
Name: | land_ValueOfSecuritiesAllowedForIssuance
Namespace Prefix: | land_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value portion of shares that an entity is required to redeem for cash or other assets at a fixed or determinable date or upon the occurrence of an event. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 25 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=109262497&loc=d3e21216-110875 + Details
Name: | us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate number of nonredeemable preferred shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage rate used to calculate dividend payments on preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
Name: | us-gaap_PreferredStockDividendRatePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
Name: | us-gaap_PreferredStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_PreferredStockSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
Name: | us-gaap_PreferredStockSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOrSaleOfEquity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Cash received on stock transaction after deduction of issuance costs. + References No definition available. + Details
Name: | us-gaap_SaleOfStockConsiderationReceivedOnTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of stock bought back by the entity at the exercise price or redemption price. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 + Details
Name: | us-gaap_StockRedeemedOrCalledDuringPeriodShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the value of stock bought back by the entity at the exercise price or redemption price. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 + Details
Name: | us-gaap_StockRedeemedOrCalledDuringPeriodValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SubsidiarySaleOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
Name: | us-gaap_WriteOffOfDeferredDebtIssuanceCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_OwnershipAxis=land_OPUnitHolderMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=land_UniversalRegistrationStatementThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=land_GladstoneLandLimitedPartnershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesCPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_PreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesDPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesEPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=land_FollowOnOfferingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=land_AtMarketProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesBPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=land_SeriesBTerminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |