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

Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended				6 Months Ended		9 Months Ended	12 Months Ended	6 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended								6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Jun. 30, 2014 Property	Jun. 30, 2013	Sep. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Certificate of Deposit [Member]	Dec. 31, 2013 Certificate of Deposit [Member]	Jun. 30, 2014 U.S. Treasury Bills [Member]	Jun. 30, 2013 U.S. Treasury Bills [Member]	Jun. 30, 2014 Real Estate [Member]	Jun. 30, 2013 Real Estate [Member]	Jun. 30, 2014 Real Estate [Member]	Jun. 30, 2013 Real Estate [Member]	Jun. 30, 2014 MetLife [Member]	May 09, 2014 MetLife [Member]	Jun. 30, 2014 Above-Market Leases [Member]	Jun. 30, 2014 Below-Market Leases [Member]	Dec. 31, 2013 Below-Market Leases [Member]	Dec. 31, 2012 Below-Market Leases [Member]	Jun. 30, 2014 Buildings and Improvements [Member]	Jun. 30, 2014 Horticulture [Member]	Jun. 30, 2014 Minimum [Member]	Jun. 30, 2014 Minimum [Member] Leases Acquired in Place and Origination Cost [Member]	Jun. 30, 2014 Minimum [Member] Equipment and Fixtures [Member]	Jun. 30, 2014 Maximum [Member]	Jun. 30, 2014 Maximum [Member] Leases Acquired in Place and Origination Cost [Member]	Jun. 30, 2014 Maximum [Member] Equipment and Fixtures [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Decrease in net income due to out of period adjustment		$ 9,638	$ 30,800				$ 30,800	$ 40,438
Estimated useful life																							39 years	25 years			5 years			7 years
Hypothetical expected lease-up periods for estimating carrying costs																									3 months			12 months
Real estate depreciation expense													296,946	148,046	556,509	283,101
Purchase price allocated to lease values in connection with the current-year acquisitions																			45,675	49,976	161,547	98,808
Amortization of acquired below market lease values	461			0	461	0
Amortization of acquired below market lease values	20,980			0	40,874	0
Period of amortization for lease origination cost																										1 year			10 years
Amortization expense related to intangibles assets	33,540			29,277	62,008	54,258
Number of property damaged					2
Number of properties recoverable					2
Impairments recognized on real estate					0
Accrued interest on escrow funds	748				1,488
Maturity of short term investment period									12 months																3 months			1 year
Short-term investments	680,781	680,443			680,781			680,443	700,000	700,000
Amended maturity date of certificate of deposit									Sep. 06, 2014
Certificate of deposit's maturity date									Sep. 06, 2013		Jun. 27, 2013
Short-term U.S. Treasury Bills												20,000,000
Total income earned	170			3,350	337	5,361
Accumulated amortization of deferred financing costs	84,160	64,148			84,160			64,148
Additional financing costs																		522,644
Unamortized deferred financing costs	812,809	309,933			812,809			309,933									298,614
Reserves or direct write-offs recorded					0
Property and casualty loss	$ 250,478				$ 250,478
Percentage of REIT taxable income to its stockholders																									90.00%			100.00%
Uncertain tax positions, percentage					50.00%