Investment Properties and Properties Held For Sale - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Jun. 30, 2013 Property State	Jun. 30, 2012	Jun. 30, 2013 Property State	Jun. 30, 2012	Oct. 12, 2011 sqft	Nov. 30, 2010 sqft
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Property leased to fully constructed fast-food restaurants		12		12
Location of properties		5		5
Purchase offer to the partnership in connection							$ 177,000
Land acquisition							5,000
Construction of planned road improvements						5,000
Compensation for taking of property						177,000
Total award settlement between condemnor and land owner for just compensation	871,500			871,500
The combined contingent legal fees shared by landlord and tenant counsels	147,250
Partnership recognized income (losses) from discontinued operations		$ 304,338	$ (9,519)	$ 302,704	$ (22,921)
Wendy's restaurants [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Property leased to fully constructed fast-food restaurants		9		9
Land acquisition							44,000
An Applebee restaurant [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Property leased to fully constructed fast-food restaurants		1		1
KFC Restaurant [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Property leased to fully constructed fast-food restaurants		1		1
Daytona's All Sports cafe [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Property leased to fully constructed fast-food restaurants		1		1