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

Quarterly report pursuant to Section 13 or 15(d)

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

Borrowings - Summary of Mortgage Note Payable and Line of Credit Additional Information (Details)								1 Months Ended				3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 13, 2018 USD ($)	Sep. 06, 2018 USD ($)	Jul. 17, 2018 USD ($)	Jul. 12, 2018 USD ($)	Apr. 11, 2018 USD ($)	Oct. 13, 2017 USD ($)	May 31, 2017 USD ($) debt_instrument	Apr. 30, 2018 USD ($)	Feb. 28, 2018 USD ($)	Apr. 30, 2017 USD ($)	Feb. 28, 2017 USD ($)	Sep. 30, 2018 USD ($) property bond debt_instrument	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) property debt_instrument	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)	Aug. 17, 2018 USD ($)	Jul. 30, 2018 USD ($)	Mar. 13, 2018 USD ($)	Dec. 05, 2014 USD ($)
Debt Instrument [Line Items]
Repayments of bonds														$ 22,800,000	$ 4,663,000
Other income												$ 1,000	$ 4,000	324,000	$ 190,000
Rabo AgriFinance, LLC
Debt Instrument [Line Items]
Stated interest rate (as percent)						4.59%
Principal Amortization						25 years
Face amount of debt						$ 518,000
New MetLife Facility
Debt Instrument [Line Items]
Principal Outstanding												126,758,000		126,758,000
Long-term debt, additional amount available												$ 13,000,000		$ 13,000,000
Minimum annualized rate (as percent)														2.50%
New MetLife Facility \| Minimum
Debt Instrument [Line Items]
Commitment fee (as percent)												0.10%		0.10%
Unused fee, percentage														0.10%
New MetLife Facility \| Maximum
Debt Instrument [Line Items]
Commitment fee (as percent)												0.20%		0.20%
Unused fee, percentage														0.20%
Farm Credit Notes Payable
Debt Instrument [Line Items]
Principal Outstanding												$ 85,588,000		$ 85,588,000
Number of debt instruments \| debt_instrument												18		18
Reduction in basis points (as percent)														0.71%
Farm Credit CFL
Debt Instrument [Line Items]
Principal Outstanding												$ 24,103,000		$ 24,103,000
Stated interest rate (as percent)												4.29%		4.29%
Number of debt instruments \| debt_instrument												7		7
Other income								$ 142,000		$ 124,000						$ 0
Reduced stated interest rate (as percent)								15.10%						18.00%
Reduction in basis points (as percent)								0.58%
Farm Credit West
Debt Instrument [Line Items]
Principal Outstanding												$ 25,332,000		$ 25,332,000
Stated interest rate (as percent)					4.99%							4.08%		4.08%
Principal Amortization					20 years 6 months
Face amount of debt					$ 1,473,000
Number of debt instruments \| debt_instrument												5		5
Other income								$ 11,000	$ 126,000		$ 59,000					0
Reduced stated interest rate (as percent)								36.60%	19.70%
Reduction in basis points (as percent)									0.75%
CF Farm Credit
Debt Instrument [Line Items]
Principal Outstanding												$ 1,270,000		$ 1,270,000
Stated interest rate (as percent)												4.41%		4.41%
Number of debt instruments \| debt_instrument												1		1
Other income																0
Reduction in basis points (as percent)								1.61%
Farm Credit FL Note Payable
Debt Instrument [Line Items]
Principal Outstanding												$ 28,042,000		$ 28,042,000
Stated interest rate (as percent)												5.24%		5.24%
Number of debt instruments \| debt_instrument												3		3
Other income								$ 27,000								0
Reduced stated interest rate (as percent)								24.60%
Reduction in basis points (as percent)								1.15%
Farm Credit FL Note Payable Issued July 12, 2018
Debt Instrument [Line Items]
Stated interest rate (as percent)				5.38%
Principal Amortization				25 years
Face amount of debt				$ 16,850,000
Farm Credit FL Note Payable Issued July 17, 2018
Debt Instrument [Line Items]
Stated interest rate (as percent)			5.38%
Principal Amortization			25 years
Face amount of debt			$ 5,560,000
NW Farm Credit
Debt Instrument [Line Items]
Principal Outstanding												$ 5,281,000		$ 5,281,000
Stated interest rate (as percent)												4.41%		4.41%
Number of debt instruments \| debt_instrument												1		1
Other income									$ 17,000							0
Reduced stated interest rate (as percent)									22.70%
Reduction in basis points (as percent)									1.00%
SWGA Farm Credit
Debt Instrument [Line Items]
Principal Outstanding												$ 1,560,000		$ 1,560,000
Stated interest rate (as percent)		5.06%										5.06%		5.06%
Principal Amortization		25 years
Face amount of debt		$ 1,560,000
Number of debt instruments \| debt_instrument												1		1
Other income																$ 0
Farmer Mac Bonds Payable
Debt Instrument [Line Items]
Principal Outstanding																			$ 90,877,000
Interest rate (as percent)																			3.55%
Undrawn Commitment																			$ 16,342,000
Long-term debt, additional amount available												$ 0		$ 0
Face amount of debt																			$ 125,000,000	$ 125,000,000
Number of debt instruments \| debt_instrument												16		16
Number of debt instruments repaid \| bond												3
Repayments of bonds												$ 16,000,000
Properties pledged as collateral \| property												0		0
Farmer Mac Bonds Payable, 2018 Issuances
Debt Instrument [Line Items]
Stated interest rate (as percent)	4.57%																4.06%	4.45%	4.47%
Principal Amortization	96 years 10 months 24 days
Face amount of debt	$ 4,110,000																$ 7,050,000	$ 10,356,000	$ 1,260,000
Number of debt instruments \| debt_instrument												4		4
Notes payable to bank \| New MetLife Facility
Debt Instrument [Line Items]
Principal Outstanding												$ 126,658,000		$ 126,658,000
Interest rate (as percent)												3.30%		3.30%
Undrawn Commitment												$ 63,530,000		$ 63,530,000
Amortizing principal payments												9,800,000		9,800,000
Face amount of debt												200,000,000		200,000,000
Notes payable to bank \| Metlife Term Loans
Debt Instrument [Line Items]
Principal Outstanding							$ 14,765,000
Principal Amortization							28 years 7 months
Number of debt instruments \| debt_instrument							2
Notes payable to bank \| Metlife Term Loans \| Minimum
Debt Instrument [Line Items]
Stated interest rate (as percent)							3.55%
Notes payable to bank \| Metlife Term Loans \| Maximum
Debt Instrument [Line Items]
Stated interest rate (as percent)							3.85%
Line of credit \| New MetLife Facility
Debt Instrument [Line Items]
Principal Outstanding												100,000		100,000
Undrawn Commitment												$ 74,900,000		$ 74,900,000
Effective interest rate (as percent)												4.59%		4.59%
Face amount of debt												$ 75,000,000		$ 75,000,000
Line of credit \| New MetLife Facility \| LIBOR
Debt Instrument [Line Items]
Percentage added to LIBOR (as percent)														2.25%
Collateral \| Farmer Mac Bonds Payable
Debt Instrument [Line Items]
Gain on collateral pledged												$ 1,400,000