XML 55 R39.htm IDEA: XBRL DOCUMENT
v3.22.4

Real Estate and Intangible Assets - Weighted Average Amortization Period for Intangible Assets Acquired and Liabilities Assumed (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Acquired Finite-Lived Intangible Assets [Line Items] |  |
All intangible assets and liabilities | 10 years 7 months 6 days | 13 years 9 months 18 days
Leasehold interest – land |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
All intangible assets and liabilities | 0 years | 20 years 9 months 18 days
In-place lease values |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
All intangible assets and liabilities | 10 years 10 months 24 days | 13 years 10 months 24 days
Leasing costs |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
All intangible assets and liabilities | 11 years 8 months 12 days | 13 years 3 months 18 days
Above-market lease values and lease incentives |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
All intangible assets and liabilities | 9 years 1 month 6 days | 0 years
Below-market lease values and other deferred revenue |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
All intangible assets and liabilities | 0 years | 9 years 9 months 18 days

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_AcquiredFiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
Name: | us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=land_LeaseholdInterestLandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_LeasesAcquiredInPlaceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=land_LeasingCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=land_AboveMarketLeaseValuesAndLeaseIncentivesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=land_BelowMarketLeasesAndDeferredRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |