Supervisory Services - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Related Party Transaction [Line Items]
Basic fee payable at rate per annum	$ 40,000
Basic fee payable at rate per month	3,333
Increase in Basic Payment plus annual CPI adjustment	102,000
Minimum monthly payment for supervisory services	2,333
Additional monthly payment for supervisory services out of Primary Overage Rent payment	1,000
Additional Payment to Supervisor based on annual distributions to Participants	10.00%
Required rate of return on cash investment for additional payment	15.00%
Original cash investment	3,600,000
Additional payment made to supervisor			225,556
Due from Supervisor, a related party	60,000		60,000
Due to Supervisor, a related party	221,164		621,233
Supervisory fees	31,797	31,425
Remuneration paid by registrants	0	0
Professional fees including amounts to a related party	43,372	23,024
Due from Supervisor, a related party	60,000		60,000
Effective July 1, 2012 [Member]
Related Party Transaction [Line Items]
Increase in Basic Payment plus annual CPI adjustment	$ 107,190