Gladstone Land Corporation Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended	12 Months Ended			1 Months Ended	3 Months Ended
	Apr. 02, 2014	Jun. 30, 2014 Property	Dec. 31, 2014 Property	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2014
Organization And Summary Of Significant Accounting Policies [Line Items]
Decrease in net income due to out of period adjustment				$ 40,438
Amortization of acquired above market lease values			9,027land_AmortizationOfAboveMarketLease	0land_AmortizationOfAboveMarketLease
Accumulated amortization of acquired above market lease values			9,027
Amortization of acquired below market lease values			146,534us-gaap_AmortizationOfBelowMarketLease	68,617us-gaap_AmortizationOfBelowMarketLease	45,852us-gaap_AmortizationOfBelowMarketLease
Accumulated amortization of acquired below market lease values			162,194	114,469	45,852
Amortization expense on intangibles assets			350,684us-gaap_AmortizationOfIntangibleAssets	90,669us-gaap_AmortizationOfIntangibleAssets	62,213us-gaap_AmortizationOfIntangibleAssets
Number of property damaged		2land_NumberOfPropertiesDamagedInFire
Number of properties recoverable			2land_NumberOfPropertiesRecoverable
Impairments recognized on real estate			0us-gaap_ImpairmentOfRealEstate
Leasehold improvements			585,947us-gaap_LeaseholdImprovementsGross	0us-gaap_LeaseholdImprovementsGross
Accrued interest on escrow funds			3,000us-gaap_IncreaseInRestrictedCash	41us-gaap_IncreaseInRestrictedCash
Restricted cash			132,741	41
Short-term investments			681,124us-gaap_ShortTermInvestments	680,443us-gaap_ShortTermInvestments
Total income earned			681us-gaap_InterestAndOtherIncome	5,746us-gaap_InterestAndOtherIncome	168us-gaap_InterestAndOtherIncome
Unamortized deferred financing costs					35,511
Line of credit termination date			May 31, 2012
Unamortized deferred financing costs			1,039,714us-gaap_DeferredFinanceCostsNet	309,933us-gaap_DeferredFinanceCostsNet
Accumulated amortization of deferred financing costs			117,433	64,148
Costs incurred for filing and preparation of a registration statement	140,822us-gaap_PaymentsOfStockIssuanceCosts		950,965us-gaap_PaymentsOfStockIssuanceCosts	4,687,579us-gaap_PaymentsOfStockIssuanceCosts	686,339us-gaap_PaymentsOfStockIssuanceCosts
Reserves or direct write-offs recorded			0us-gaap_ProvisionForDoubtfulAccounts
Other income				0us-gaap_OtherIncome
Uncertain tax positions, percentage			50.00%
2014 New Real Estate Activity [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Amortization expense on intangibles assets			43,328				43,328
Written off intangibles assets			(46,526)			(46,526)
Follow-on Offering [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Costs incurred for filing and preparation of a registration statement			114,961
Issuance costs applied to proceeds	7,052
Certificate of Deposit [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Maturity of short term investment period			12 months
Short-term investments			700,000	700,000
Amended maturity date of certificate of deposit			Sep. 06, 2014
Certificate of deposit's maturity date			Sep. 06, 2013
New Certificates of Deposit [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Certificate of deposit's maturity date			Sep. 06, 2015
U.S. Treasury Bills [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Certificate of deposit's maturity date			Jun. 27, 2013
Short-term U.S. Treasury Bills				20,000,000
MetLife [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Unamortized deferred financing costs			298,614
Above-Market Lease Values [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Purchase price allocated to lease values in connection with the current-year acquisitions			65,203	0
Below-Market Lease Values [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Purchase price allocated to lease values in connection with the current-year acquisitions			371,707	260,356	98,808
Water Permit [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Restricted cash			129,700
Permit approved date			Jan. 27, 2015
Restricted cash funds released date			Feb. 12, 2015
Real Estate [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Depreciation expense			1,384,960	631,786	412,267
Minimum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Hypothetical expected lease-up periods for estimating carrying costs			1 month
Maturity of short term investment period			3 months
Percentage of REIT taxable income to its stockholders			90.00%
Minimum [Member] \| Leases Acquired in Place and Origination Cost [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Period of amortization for lease origination cost			1 year
Maximum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Hypothetical expected lease-up periods for estimating carrying costs			24 months
Maturity of short term investment period			1 year
Percentage of REIT taxable income to its stockholders			100.00%
Maximum [Member] \| Leases Acquired in Place and Origination Cost [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Period of amortization for lease origination cost			10 years
Buildings and Improvements [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated useful life			39 years
Horticulture [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated useful life			25 years
Equipment and Fixtures [Member] \| Minimum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated useful life			5 years
Equipment and Fixtures [Member] \| Maximum [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated useful life			7 years
Leasehold Improvements [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Depreciation expense			56,760
Accumulated depreciation			$ 56,760