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

Real Estate and Intangible Assets - Fair Value of Acquired Assets and Liabilities Assumed Related to Properties Acquired (Detail)

Real Estate and Intangible Assets - Fair Value of Acquired Assets and Liabilities Assumed Related to Properties Acquired (Detail) (2015 New Real Estate Activity [Member], USD $)	Mar. 31, 2015
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	$ 20,821,405
In-place Leases [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	300,877
Espinosa Road [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	16,906,125
Espinosa Road [Member] \| In-place Leases [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	246,472
Parrish Road [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	3,915,280
Parrish Road [Member] \| In-place Leases [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	54,405
Irrigation System [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	1,797,252
Irrigation System [Member] \| Espinosa Road [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	497,401
Irrigation System [Member] \| Parrish Road [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	1,299,851
Leasing Costs [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	123,968
Leasing Costs [Member] \| Espinosa Road [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	44,519
Leasing Costs [Member] \| Parrish Road [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	79,449
Customer Relationships [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	216,681
Customer Relationships [Member] \| Espinosa Road [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	180,789
Customer Relationships [Member] \| Parrish Road [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	35,892
Land and Land Improvements [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	18,255,530
Land and Land Improvements [Member] \| Espinosa Road [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	15,852,466
Land and Land Improvements [Member] \| Parrish Road [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	2,403,064
Buildings and Improvements [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	127,097
Buildings and Improvements [Member] \| Espinosa Road [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	84,478
Buildings and Improvements [Member] \| Parrish Road [Member]
Business Acquisition Purchase Price Allocation [Line Items]
Total Acquisition Cost	$ 42,619