XML 50 R38.htm IDEA: XBRL DOCUMENT
v3.23.1

Related-Party Transactions - Additional Information (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 USD ($) executive_officer | Mar. 31, 2022 USD ($)
Related Party Transaction [Line Items] |  |
Number of executive officers serving as directors and executive officers of adviser and administrator | executive_officer | 2 |
Hurdle rate, quarterly | 1.75% |
Hurdle rate, annual | 7.00% |
Pre-Incentive fee FFO | 100.00% |
Pre-Incentive fee, exceeded | 2.1875% |
Pre-Incentive Fee, exceeded, annual | 8.75% |
Pre-Incentive fee | 20.00% |
Cumulative realized capital gains | 15.00% |
Notice period for termination of agreement without cause | 120 days |
Multiplier | 300.00% |
Period prior to termination | 24 months |
Financing fees | $ | $ 0 | $ 94
Termination agreement, percentage of independent directors | 66.67% |
Preferred Stock | Series C Preferred Stock |  |
Related Party Transaction [Line Items] |  |
Selling commission fee | 6.00% |
Dealer-manager fee | 3.00% |
Preferred Stock | Series E Preferred Stock |  |
Related Party Transaction [Line Items] |  |
Selling commission fee | 7.00% |
Dealer-manager fee | 3.00% |
Gladstone Securities |  |
Related Party Transaction [Line Items] |  |
Financing fee | 0.14% |
Gladstone Securities | Minimum | Gladstone Securities |  |
Related Party Transaction [Line Items] |  |
Financing fee | 0.50% |
Gladstone Securities | Maximum | Gladstone Securities |  |
Related Party Transaction [Line Items] |  |
Financing fee | 1.00% |
Prior Advisory Agreement |  |
Related Party Transaction [Line Items] |  |
Management fee | 0.60% |
Base management fee, quarterly | 0.15% |

X
- Definition Amount to be paid to adviser in percentage of pre incentive fee condition one. + References No definition available. + Details
Name: | land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionOne
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount to be paid to adviser in percentage of pre incentive fee condition two. + References No definition available. + Details
Name: | land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionTwo
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Annualized incentive fee per advisory agreement. + References No definition available. + Details
Name: | land_AnnualizedIncentiveFeePerAdvisoryAgreement
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Dealer-Manager Fee Percent Of Gross Proceeds Limit + References No definition available. + Details
Name: | land_DealerManagerFeePercentOfGrossProceedsLimit
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Fee + References No definition available. + Details
Name: | land_FinancingFee
Namespace Prefix: | land_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Incentive fee per advisory agreement. + References No definition available. + Details
Name: | land_IncentiveFeePerAdvisoryAgreement
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum annual percentage of stockholders equity to pay full pre incentive fee to adviser. + References No definition available. + Details
Name: | land_MaximumAnnualPercentageOfStockholdersEquityToPayFullPreIncentiveFeeToAdviser
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Notice Period For Termination Of Agreement Without Cause + References No definition available. + Details
Name: | land_NoticePeriodForTerminationOfAgreementWithoutCause
Namespace Prefix: | land_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Executive Officers Serving As Directors And Executive Officers Of Adviser And Administrator + References No definition available. + Details
Name: | land_NumberOfExecutiveOfficersServingAsDirectorsAndExecutiveOfficersOfAdviserAndAdministrator
Namespace Prefix: | land_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of expected annual base management fee to aggregate stockholders equity. + References No definition available. + Details
Name: | land_PercentageOfExpectedAnnualBaseManagementFeeToAggregateStockholdersEquity
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage Of Expected Quarterly Base Management Fee To Aggregate Stockholders Equity + References No definition available. + Details
Name: | land_PercentageOfExpectedQuarterlyBaseManagementFeeToAggregateStockholdersEquity
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage Of Financing Fee To Amount Of Mortgage + References No definition available. + Details
Name: | land_PercentageOfFinancingFeeToAmountOfMortgage
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of Incentive Fees on Capital Gains + References No definition available. + Details
Name: | land_PercentageofIncentiveFeesonCapitalGains
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | land_PreIncentiveFeeInPercentageOfCommonStockholdersEquityThatAwardsAdviserHundredPercentOfAmountOfPreIncentiveFeeMaximumPercentage
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Selling Commission Percent Of Gross Proceeds Limit + References No definition available. + Details
Name: | land_SellingCommissionPercentOfGrossProceedsLimit
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Termination Agreement, Multiplier For Average Annual Base Management Fee + References No definition available. + Details
Name: | land_TerminationAgreementMultiplierForAverageAnnualBaseManagementFee
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Termination Agreement, Percentage Of Independent Directors + References No definition available. + Details
Name: | land_TerminationAgreementPercentageOfIndependentDirectors
Namespace Prefix: | land_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Termination Agreement, Period Prior To Termination + References No definition available. + Details
Name: | land_TerminationAgreementPeriodPriorToTermination
Namespace Prefix: | land_
Data Type: | xbrli:durationItemType
Balance Type: | na
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_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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_SeriesCPreferredStockMember
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_RelatedPartyTransactionsByRelatedPartyAxis=srt_AffiliatedEntityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=land_GladstoneSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=land_PriorAdvisoryAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |