Lease - Additional Information (Detail) (USD $)	1 Months Ended	9 Months Ended
	Dec. 31, 2011	Sep. 30, 2012 Renewals OptionPlan	Sep. 30, 2011
Leases [Line Items]
Lease initiation date		May 01, 1954
Number of granting Lessee options to extend the lease		4
Additional renewal period		25 years
Lease expiring date		2103
First renewal period of lease		From October 1, 2003 through September 30, 2028
Second renewal period of lease		From October 1, 2028 through September 30, 2053
Granting of options to the Lessee to extend the lease		For two additional 25-year renewal terms expiring in 2103
Number of additional renewals		2
Effective date of third modification lease		May 01, 1975
Amount of partial payment for basic supervisory services included in basic annual rent		$ 28,000
Effective date of six modification lease		Nov. 17, 2000
Amount included in monthly basic rent expense		2,333.33
Monthly advance of primary overage rent		62,667
Maximum amount of advance annually against primary overage rent		752,000
Percentage of monthly distribution		20.00%
Participants original cash investment		3,600,000
Monthly supervisory services expense additional payment		1,667
Percentage of excess amount of the net operating profit of the Lessee, as defined	50.00%
Rent income, earned from a related party		6,842,028	7,367,847
Net operating profit of lessee after deduction of basic rent		7,869,123	9,452,901
Primary overage rent paid by lessee		752,000	752,000
Secondary overage rent paid by lessee		3,558,414	4,350,339
Percentage of excess of the net operating profit, as defined		50.00%	50.00%
Amount of interest earned on funds borrowed for the improvement program		148	111
Amount of additional payment to supervisor deducted before calculating amount distributed by Registrant to the participants			1,500,000
Additional Payment to Supervisor			284,745
Distributed by registrant to the participants			$ 2,562,704
Allocation of the consideration to the Registrant.		50.00%
Allocation of the consideration to the Lessee		50.00%