Gladstone Land Corporation Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Summary of Mortgage Note Payable and Line of Credit Additional Information (Detail)

v3.5.0.2

Borrowings - Summary of Mortgage Note Payable and Line of Credit Additional Information (Detail)		12 Months Ended
	Jul. 01, 2016 USD ($)	Dec. 31, 2015	Sep. 30, 2016 USD ($) property	Aug. 22, 2016 USD ($)	Dec. 05, 2014 USD ($)
Farm Credit Central Florida Notes Payable [Member]
Debt Instrument [Line Items]
Amount	$ 3,120,000
Debt term	36 years
MetLife Mortgage Notes Payable [Member]
Debt Instrument [Line Items]
Amount			$ 100,000,000
Remaining availability			600,000
MetLife Line of Credit [Member]
Debt Instrument [Line Items]
Amount			25,000,000
Farm Credit CFL Mortgage Notes Payable [Member]
Debt Instrument [Line Items]
Amount			34,587,880
Reduced stated interest rate		16.10%
Farmer Mac Bonds Payable [Member]
Debt Instrument [Line Items]
Amount			125,000,000	$ 1,020,000	$ 75,000,000
Remaining availability			$ 0
Properties pledged as collateral \| property			0

- 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

- 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

- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentInterestRateIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

- 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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=land_MetLifeMortgageNotesPayableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=land_MetLifeLineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=land_FarmCreditMortgageNotesPayableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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