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

Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

Commitments and Contingencies - Additional Information (Detail)	1 Months Ended		2 Months Ended	3 Months Ended		4 Months Ended	5 Months Ended	7 Months Ended	9 Months Ended		20 Months Ended	25 Months Ended			44 Months Ended	61 Months Ended	72 Months Ended	89 Months Ended	115 Months Ended	118 Months Ended	184 Months Ended
	Aug. 31, 2017 a	Jun. 30, 2017 farm	Sep. 30, 2017 USD ($) a	Sep. 30, 2017 USD ($) a	Sep. 30, 2016 USD ($) a	Sep. 30, 2017 USD ($) a	Sep. 30, 2017 USD ($) a	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($) a farm	Sep. 30, 2016 USD ($) a farm	Mar. 31, 2019 USD ($)	Aug. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Sep. 30, 2017 USD ($) a	Dec. 31, 2020 USD ($)	Jun. 30, 2022 USD ($)	Feb. 23, 2024 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2026 USD ($)	May 31, 2027 USD ($)	Jan. 09, 2031 USD ($)	May 31, 2017 farm
Loss Contingencies [Line Items]
Estimated cost									$ 3,438,000	$ 10,126,000
Rental revenue				$ 6,561,000	$ 4,467,000				$ 18,302,000	$ 12,388,000
Number of farms acquired \| farm									0	6
Area of real estate property (in acres) \| a			61,794	61,794	33,800	61,794	61,794		61,794	33,800				61,794
2017 New Real Estate Activity
Loss Contingencies [Line Items]
Rental revenue				$ 1,500,000					$ 3,000,000
Area of real estate property (in acres) \| a			11,202	11,202		11,202	11,202		11,202					11,202
Oregon
Loss Contingencies [Line Items]
Number of farms in lease amendment \| farm																						1
Rental revenue									$ 887,000	$ 877,000
Expended or accrued for capital improvements				$ 78,000			$ 677,000
Area of real estate property (in acres) \| a			2,313	2,313	2,313	2,313	2,313		2,313	2,313				2,313
Oregon \| Forecast
Loss Contingencies [Line Items]
Estimated cost															$ 1,800,000
Annual rent escalation (as percent)																		6.50%
Rental revenue																		$ 718,000
North Carolina
Loss Contingencies [Line Items]
Rental revenue									$ 42,000	$ 0
Expended or accrued for capital improvements						$ 103,000
Number of farms acquired \| farm		2
Number of years in lease term to provide additional support		2 years
Area of real estate property (in acres) \| a			310	310	0	310	310		310	0				310
North Carolina \| Forecast
Loss Contingencies [Line Items]
Estimated cost													$ 300,000
Rental revenue																			$ 157,000
Florida
Loss Contingencies [Line Items]
Number of farms in lease amendment \| farm		1
Rental revenue									$ 4,839,000	$ 2,408,000
Expended or accrued for capital improvements			$ 0			$ 240,000
Area of real estate property (in acres) \| a	1,910		11,225	11,225	5,567	11,225	11,225		11,225	5,567				11,225
Florida \| Forecast
Loss Contingencies [Line Items]
Estimated cost								$ 700,000
Annual rent escalation (as percent)																8.50%
Rental revenue																$ 280,000	$ 300,000
Okeechobee, FL \| 2017 New Real Estate Activity \| Parrot Avenue(6)
Loss Contingencies [Line Items]
Area of real estate property (in acres) \| a			1,910	1,910		1,910	1,910		1,910					1,910
Okeechobee, FL \| 2017 New Real Estate Activity \| Forecast \| Parrot Avenue(6)
Loss Contingencies [Line Items]
Estimated cost											$ 1,000,000
California
Loss Contingencies [Line Items]
Annual rent escalation (as percent)	6.00%
Rental revenue									$ 8,749,000	$ 6,986,000
Expended or accrued for capital improvements			$ 132,000											$ 8,400,000
Number of years in lease term to provide additional support	2 years
Area of real estate property (in acres) \| a	361		7,921	7,921	6,516	7,921	7,921		7,921	6,516				7,921
California \| Forecast
Loss Contingencies [Line Items]
Rental revenue																				$ 2,300,000	$ 5,200,000
Santa Barbara, CA \| 2017 New Real Estate Activity \| Cat Canyon Road(7)
Loss Contingencies [Line Items]
Area of real estate property (in acres) \| a			361	361		361	361		361					361
Santa Barbara, CA \| 2017 New Real Estate Activity \| Forecast \| Cat Canyon Road(7)
Loss Contingencies [Line Items]
Estimated cost												$ 4,000,000