Real Estate Held for Investment (Detail) (USD $)	12 Months Ended		0 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Feb. 23, 2012 Tractor Supply Starkville, MS	Feb. 23, 2013 Tractor Supply Starkville, MS	Dec. 31, 2012 Leases, Acquired-in-Place [Member]	Dec. 31, 2011 Leases, Acquired-in-Place [Member]	Dec. 31, 2012 Below Market Leases [Member]	Dec. 31, 2011 Below Market Leases [Member]
Depreciation, Nonproduction	$ 416,459	$ 375,383
Business Acquisition, Effective Date of Acquisition			Feb. 23, 2012
Business Acquisition, Percentage of Voting Interests Acquired			53.00%
Business Acquisition, Name of Acquired Entity			Tractor Supply Company store in Starkville, Mississippi
Business Acquisition, Cost of Acquired Entity, Cash Paid			1,510,500
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets			257,767
Business Acquisition, Purchase Price Allocation, Noncurrent Liabilities			92,542
Business Acquisition, Cost of Acquired Entity, Transaction Costs			28,135
Average Lease Term			15
Real Estate Revenue, Net				115,542
Amortization of Acquired Intangible Assets					14,400	0
Amortization of above and below Market Leases							5,170	0
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months					$ 17,280		$ 6,204