Schedule III - Real Estate and Accumulated Depreciation II (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Real Estate and Accumulated Depreciation [Line Items]
Restaurants, Beginning Balance	$ 2,942,819	$ 2,942,819	$ 2,942,819
Restaurants, Additions
Restaurants, Retirements
Restaurants, Ending Balance	2,942,819	2,942,819	2,942,819
Accumulated Depreciation, Beginning Balance	1,056,801	1,027,853	998,905
Accumulated Depreciation, Additions	28,948	28,948	28,948
Accumulated Depreciation, Retirements
Accumulated Depreciation, Ending Balance	$ 1,085,749	$ 1,056,801	$ 1,027,853