Annual report pursuant to Section 13 and 15(d)

Real Estate and Lease Intangibles - Schedule of Purchase Agreements (Detail)

v2.4.1.9
Real Estate and Lease Intangibles - Schedule of Purchase Agreements (Detail) (USD $)
 12 Months Ended
Dec. 31, 2014
acre
Real Estate Properties [Line Items]  
Purchase and sale agreements, Gross acres 394land_PurchaseOfGrossAcres
Purchase and sale agreements, Purchase Price $ 20,764,021land_PurchasePriceOfAgreement
California [Member] | Strawberries [Member] | 2014 Agreement [Member]  
Real Estate Properties [Line Items]  
Purchase and sale agreements, Start date Sep. 29, 2014
Purchase and sale agreements, Gross acres 63land_PurchaseOfGrossAcres
/ invest_InvestmentAxis
= land_TwoThousandFourteenAgreementMember
/ us-gaap_RealEstatePropertiesAxis
= land_StrawberriesMember
/ us-gaap_StatementGeographicalAxis
= stpr_CA
Purchase and sale agreements, Purchase Price 3,800,000land_PurchasePriceOfAgreement
/ invest_InvestmentAxis
= land_TwoThousandFourteenAgreementMember
/ us-gaap_RealEstatePropertiesAxis
= land_StrawberriesMember
/ us-gaap_StatementGeographicalAxis
= stpr_CA
California [Member] | Strawberries [Member] | 2015 Agreement [Member]  
Real Estate Properties [Line Items]  
Purchase and sale agreements, Start date Dec. 17, 2015
Purchase and sale agreements, Gross acres 331land_PurchaseOfGrossAcres
/ invest_InvestmentAxis
= land_TwoThousandFifteenAgreementMember
/ us-gaap_RealEstatePropertiesAxis
= land_StrawberriesMember
/ us-gaap_StatementGeographicalAxis
= stpr_CA
Purchase and sale agreements, Purchase Price $ 16,964,021land_PurchasePriceOfAgreement
/ invest_InvestmentAxis
= land_TwoThousandFifteenAgreementMember
/ us-gaap_RealEstatePropertiesAxis
= land_StrawberriesMember
/ us-gaap_StatementGeographicalAxis
= stpr_CA