XML 49 R38.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Borrowings - Summary of Mortgage Note Payable and Line of Credit Additional Information (Detail) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2017 USD ($) property | Jan. 12, 2017 USD ($) | Jun. 16, 2016 USD ($) | Dec. 05, 2014 USD ($)
New MetLife Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal Outstanding | $ 125,658,000 |  |  |
Commitment fee (as percent) | 0.20% |  |  |
Long-term debt, additional amount available | $ 21,800,000 |  |  |
Minimum annualized rate (as percent) | 2.50% |  |  |
Farm Credit Central Florida Notes Payable |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal Outstanding | $ 22,187,000 |  |  |
Interest rate (as percent) | 3.47% |  |  |
Farm Credit West Note Payable |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal Outstanding | $ 13,061,000 |  |  |
Interest rate (as percent) | 3.66% |  |  |
Farmer Mac Bonds Payable |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Aggregate/Initial Commitment | $ 125,000,000 |  | $ 125,000,000 | $ 75,000,000
Principal Outstanding | $ 81,521,000 |  |  |
Interest rate (as percent) | 3.10% |  |  |
Undrawn Commitment | $ 42,343,000 |  |  |
Long-term debt, additional amount available | $ 0 |  |  |
Properties pledged as collateral | property | 0 |  |  |
Farmer Mac Bonds Payable, 2017 Issuances |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Aggregate/Initial Commitment |  | $ 32,400,000 |  |
Farmer Mac Bonds Payable, 2017 Issuances | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate (as percent) |  | 2.80% |  |
Farmer Mac Bonds Payable, 2017 Issuances | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate (as percent) |  | 3.63% |  |
MetLife Term Notes | New MetLife Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Aggregate/Initial Commitment | $ 150,000,000 |  |  |
Principal Outstanding | $ 105,608,000 |  |  |
Interest rate (as percent) | 3.16% |  |  |
Debt term | 10 years |  |  |
Undrawn Commitment | $ 40,980,000 |  |  |
MetLife Lines of Credit | New MetLife Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Aggregate/Initial Commitment | 50,000,000 |  |  |
Principal Outstanding | 20,050,000 |  |  |
Undrawn Commitment | $ 29,950,000 |  |  |
Effective interest rate (as percent) | 3.26% |  |  |
MetLife Lines of Credit | New MetLife Facility | LIBOR |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage added to LIBOR (as percent) | 2.25% |  |  |

X
- Definition Debt instrument commitment fee percentage. + References No definition available. + Details
Name: | land_DebtInstrumentCommitmentFeePercentage
Namespace Prefix: | land_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Debt instrument minimum annualized rate. + References No definition available. + Details
Name: | land_DebtInstrumentMinimumAnnualizedRate
Namespace Prefix: | land_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line of Credit Facility, Additional Properties Pledged as Collateral + References No definition available. + Details
Name: | land_LineofCreditFacilityAdditionalPropertiesPledgedasCollateral
Namespace Prefix: | land_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Long Term Debt Additional Available Amount + References No definition available. + Details
Name: | land_LongTermDebtAdditionalAvailableAmount
Namespace Prefix: | land_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
Name: | us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=land_NewMetlifeCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=land_FarmCreditCentralFloridaNotesPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=land_FarmCreditWestNotePayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=land_FarmerMacBondsPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=land_FarmerMacBondsPayableIssuedinCurrentPeriodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_NotesPayableToBanksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |