Leasing Activities - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013 Restaurants	Sep. 30, 2012 Restaurants	Sep. 30, 2013 Restaurants Property	Sep. 30, 2012 Restaurants
Operating Leased Assets [Line Items]
Number of lease years			35 years
Percentage of gross sales of the restaurants			12.00%
Leases expiration date			2020 to 2021
Number of properties leased	6	6	6	6
Number of properties subleased to Del Taco franchisee			1
Minimum rentals due per month to Partnership			$ 3,500
Combined unaudited sales	1,400,297	1,354,723	4,103,722	3,962,850
Combined unaudited net income (loss)	(78)	1,003	(10,448)	(12,829)
Number of restaurants operated	5		5
Del Taco franchisee [Member]
Operating Leased Assets [Line Items]
Combined unaudited sales	$ 225,790	$ 219,840	$ 655,097	$ 646,957
Number of restaurants operated	1		1