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

Quarterly report pursuant to Section 13 or 15(d)

Equity - Additional Information (Detail)

Equity - Additional Information (Detail)					3 Months Ended	6 Months Ended		12 Months Ended	36 Months Ended
Equity - Additional Information (Detail)	Apr. 12, 2017 USD ($) security	Mar. 22, 2017 USD ($) shares	Mar. 13, 2017 USD ($) $ / shares shares	Apr. 02, 2014 USD ($) security	Jun. 30, 2017 USD ($) $ / shares shares	Jun. 30, 2017 USD ($) $ / shares shares	Jun. 30, 2016 USD ($) shares	Dec. 31, 2016 $ / shares shares	Mar. 31, 2017 USD ($)	Dec. 31, 2015 shares	Aug. 07, 2015 USD ($)
Subsidiary, Sale of Stock [Line Items]
Common stock, shares authorized (in shares)					18,000,000	18,000,000		18,000,000
Common stock, par value (in dollars per share) \| $ / shares					$ 0.001	$ 0.001		$ 0.001
Common stock, shares issued (in shares)					11,850,624	11,850,624		10,024,875
Common stock, shares outstanding (in shares)					11,850,624	11,850,624		10,024,875
OP units held by non-controlling interest limited partners \| $					$ 745,879	$ 745,879
Maximum number of securities that can be sold (in securities) \| security	2			2
Proceeds from issuance of equity \| $						$ 20,722,000	$ 0
Registration Statement
Subsidiary, Sale of Stock [Line Items]
Proceeds from issuance of equity \| $									$ 73,100,000
Number of shares issued (in shares)						0
Registration Statement \| General and administrative expenses
Subsidiary, Sale of Stock [Line Items]
Professional fees and stockholder-related expenses \| $					$ 46,000
Public offering
Subsidiary, Sale of Stock [Line Items]
Sale of common stock sold under sale agreement (in shares)			1,680,000
Average sales price of common stock sold (in dollars per share) \| $ / shares			$ 11.35
Gross proceeds from issuance of common stock \| $			$ 19,100,000
Net proceeds from issuance of common stock \| $			$ 18,000,000
Over-allotment option
Subsidiary, Sale of Stock [Line Items]
Sale of common stock sold under sale agreement (in shares)		145,749
Gross proceeds from issuance of common stock \| $		$ 1,700,000
Net proceeds from issuance of common stock \| $		$ 1,600,000
ATM Program
Subsidiary, Sale of Stock [Line Items]
Common stock, shares issued (in shares)					64,561	64,561
Sale of common stock sold under sale agreement (in shares)						0
Common stock, value authorized \| $											$ 30,000,000.0
Average sales price price (in dollars per share) \| $ / shares					$ 10.23	$ 10.23
Common stock, value, outstanding \| $					$ 660,000	$ 660,000
Common stock, value, issued \| $					$ 650,000	$ 650,000
Common Stock
Subsidiary, Sale of Stock [Line Items]
Common stock, shares outstanding (in shares)					11,850,624.000	11,850,624.000	9,992,941	10,024,875		9,992,941
Number of shares issued (in shares)						1,825,749
Common Stock \| Registration Statement
Subsidiary, Sale of Stock [Line Items]
Common stock, shares issued (in shares)					4,013,763	4,013,763
Securities allowed for issuance (amount up to) \| $	$ 300,000,000			$ 300,000,000
Preferred Stock \| Registration Statement
Subsidiary, Sale of Stock [Line Items]
Common stock, shares issued (in shares)					1,150,000	1,150,000
OP Unit Holder
Subsidiary, Sale of Stock [Line Items]
Minimum ownership period require to redeem units						12 months
Conversion ratio						1
Gladstone Land Limited Partnership
Subsidiary, Sale of Stock [Line Items]
Company's ownership percent (as percent)					89.10%	89.10%		87.40%
OP units held by non-controlling limited partners (in shares)						1,449,258		1,449,258