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

Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Additional Information (Detail)

Borrowings - Additional Information (Detail)	1 Months Ended				3 Months Ended			6 Months Ended
Borrowings - Additional Information (Detail)	Apr. 30, 2017 USD ($)	Feb. 28, 2017 USD ($)	Jan. 31, 2017	Mar. 31, 2016 USD ($)	Jun. 30, 2017 USD ($) debt_instrument	Mar. 31, 2017	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) debt_instrument	Jun. 30, 2016 USD ($)	May 31, 2017 USD ($) debt_instrument	Jan. 12, 2017 USD ($)	Dec. 31, 2016 USD ($)	Oct. 05, 2016 USD ($)	Oct. 04, 2016 USD ($)	Jun. 16, 2016 USD ($)	Dec. 05, 2014 USD ($)	May 09, 2014 USD ($)
Debt Instrument [Line Items]
Weighted average interest rate (as percent)					3.28%		3.25%	3.27%	3.27%
Other income					$ 0		$ 9,000	$ 185,000	$ 103,000
Borrowings under lines of credit					$ 35,050,000			$ 35,050,000				$ 16,550,000
Metlife Term Loans \| Notes and bonds payables
Debt Instrument [Line Items]
Face amount of debt										$ 15,300,000
Number of debt instruments \| debt_instrument										2
Farm Credit Notes Payable
Debt Instrument [Line Items]
Reduced stated interest rate (as percent)								17.20%
Reduction in basis points (as percent)								0.61%
Farm Credit Central Florida Notes Payable
Debt Instrument [Line Items]
Reduced stated interest rate (as percent)						15.80%
Reduction in basis points (as percent)					0.55%
Number of debt instruments \| debt_instrument					8			8
Other income	$ 124,000			$ 94,000
Farm Credit West Notes Payable
Debt Instrument [Line Items]
Reduced stated interest rate (as percent)			21.30%
Reduction in basis points (as percent)						0.76%
Number of debt instruments \| debt_instrument					2			2
Other income		$ 59,000					$ 0
MetLife Facility
Debt Instrument [Line Items]
Maximum borrowing capacity													$ 200,000,000	$ 125,000,000
2015 Metlife Term Note (MetLife)
Debt Instrument [Line Items]
Face amount of debt																	$ 100,000,000
2015 Metlife Line of Credit (MetLife)
Debt Instrument [Line Items]
Face amount of debt																	$ 25,000,000
2016 Metlife Term Note (MetLife)
Debt Instrument [Line Items]
Line of credit, carrying value													50,000,000
2016 Metlife Line of Credit (MetLife)
Debt Instrument [Line Items]
Line of credit, carrying value													$ 25,000,000
Farmer Mac Bonds Payable
Debt Instrument [Line Items]
Face amount of debt					$ 125,000,000			$ 125,000,000							$ 125,000,000	$ 75,000,000
Number of debt instruments \| debt_instrument					13			13
Extension period of debt								2 years
Farmer Mac Bonds Payable, 2017 Issuances
Debt Instrument [Line Items]
Face amount of debt											$ 32,400,000
Number of debt instruments \| debt_instrument					4			4
Mortgage notes and bonds payable \| Notes and bonds payables
Debt Instrument [Line Items]
Aggregate fair value of mortgage notes payable outstanding					$ 234,000,000			$ 234,000,000
Mortgage notes payable, carrying value					238,600,000			238,600,000
Short-term variable-rate mortgage notes and bonds payable \| Notes and bonds payables
Debt Instrument [Line Items]
Borrowings under lines of credit					$ 35,100,000			$ 35,100,000