Sublease - Additional Information (Detail) (USD $)	6 Months Ended	12 Months Ended						6 Months Ended										6 Months Ended	12 Months Ended	6 Months Ended		6 Months Ended
	Jun. 30, 2013 OptionPlan	Dec. 31, 2012	Feb. 26, 2013	Jul. 09, 2012	Jul. 26, 2011	Jul. 26, 2011 First Mortgage [Member]	Apr. 17, 2002 First Mortgage [Member]	Jun. 30, 2013 Secured Term Loan [Member]	Jun. 30, 2012 Secured Term Loan [Member]	Feb. 28, 2013 Secured Term Loan [Member]	Oct. 11, 2012 Secured Term Loan [Member]	Jul. 09, 2012 Secured Term Loan [Member]	Apr. 05, 2012 Secured Term Loan [Member]	Nov. 02, 2011 Secured Term Loan [Member]	Jul. 26, 2011 Secured Term Loan [Member]	Feb. 25, 2009 Secured Term Loan [Member] Second Modification [Member]	Jun. 30, 2013 Capital One Bank First Mortgage [Member]	Jun. 30, 2013 Sublease [Member]	Dec. 31, 2012 Sublease [Member]	Jun. 30, 2013 Sublease [Member] Forecast [Member]	Jun. 30, 2013 Sublease [Member] Sublessee [Member]	Jun. 30, 2013 Sublease [Member] Sublessee [Member] Minimum [Member]
Property Subject to or Available for Operating Lease [Line Items]
Description of lessor leasing arrangements, operating leases	The Sublease provided four separate options for Sublessee to renew the term, in each case for an additional 21 years, on the terms of the original Sublease. Such renewals have been exercised by Sublessee (a) on January 30, 1989, for the first renewal period from January 5, 1992 through January 4, 2013 and (b) as of February 11, 2010, for the remaining three renewal periods from January 5, 2013 through January 4, 2076 (the last two such renewals being exercised by Sublessee with Registrant’s consent for early exercise).
Number of options	4
Sublease renewal term, in years	21 years
First renewal period of lease	January 5, 1992 through January 4, 2013
Second renewal period of lease	January 5, 2013 through January 4, 2076
Annual basis rent																		$ 6,018,750		$ 5,895,625
Net operating profit, percentage																					50.00%
Net operating profit																						1,000,000
Debt instrument amount	269,000,000		50,000,000	30,000,000	92,000,000	60,500,000	60,500,000	110,000,000		50,000,000	500,000,000	30,000,000	30,000,000	300,000,000	159,000,000	31,500,000	60,500,000
Basic rent increase representing debt interest								1,082,806
Basic rent increase representing debt interest, net									1,144,369
Debt instrument aggregate additional amount								110,000,000
Decrease in Basic Rent									61,563
Related party transactions due to Sublessee	17,435,294	3,146,689
Related party transactions due from Sublessee	8,778,000	15,174,264
Certified operating report filing period, after the end of each fiscal year																		60 days
Additional distribution	13,254,000	17,343,000																13,254,000
Additional distribution per participants																		4,016
Participants margin to get additional distribution Amount																		10,000
Overage Rent																			24,199,368
Distribution fees relating to proposed consolidation and initial public offering																		10,094,843
Filing fees																		4,525
Payment of additional supervisory fee to supervisor																		846,000
Payment of supervisory fee to supervisor																		905,417
Prior year Payment of supervisory fee to supervisor																		59,417
Buyout Payable																		$ 100
Buyout notice period																		10 days