Summary of Significant Accounting Policies - Reconciliation between U.S. Statutory Federal Income Tax Rate and Effective Income Tax Rate (Parenthetical) (Detail)

v2.4.1.9

Summary of Significant Accounting Policies - Reconciliation between U.S. Statutory Federal Income Tax Rate and Effective Income Tax Rate (Parenthetical) (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Income tax provision on deferred intercompany gains	$ 2,100,000land_IncomeTaxProvisionOnDeferredIntercompanyGains
Benefit of REIT conversion	$ 743,676land_BenefitFromRealEstateInvestmentTrustConversion