Annual report pursuant to Section 13 and 15(d)

Schedule III - Real Estate and Accumulated Depreciation (Parenthetical) (Detail)

v2.4.1.9
Schedule III - Real Estate and Accumulated Depreciation (Parenthetical) (Detail) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Aggregate cost 148,371,478us-gaap_RealEstateGrossAtCarryingValue $ 78,478,053us-gaap_RealEstateGrossAtCarryingValue $ 39,678,968us-gaap_RealEstateGrossAtCarryingValue $ 32,399,715us-gaap_RealEstateGrossAtCarryingValue
Land, Buildings, Site Improvements & Horticulture [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Aggregate cost 145,700,000us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis
= land_LandBuildingsSiteImprovementAndHorticultureMember 		     
Buildings and Improvements [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 39 years      
Horticulture [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 25 years      
Minimum [Member] | Equipment and Fixtures [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 5 years      
Maximum [Member] | Equipment and Fixtures [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Estimated useful life 7 years