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Long-term Debt - Additional Information (Detail) - USD ($)	1 Months Ended	12 Months Ended
	Sep. 30, 2006	Jun. 25, 2015	Jun. 26, 2014	Feb. 07, 2008
Mortgage Facility Tranche A [Member]
Debt Disclosure [Line Items]
Interest rate reset date		Mar. 01, 2018
Mortgage Facility maturity date		Mar. 01, 2023
Interest rate		7.63%
Amounts classified as long-term debt		$ 16,600,000
Debt obligation outstanding		$ 19,000,000	$ 21,400,000	$ 36,000,000
Mortgage Facility Tranche B [Member]
Debt Disclosure [Line Items]
Interest rate reset date		Mar. 01, 2016
Mortgage Facility maturity date		Mar. 01, 2023
Mortgage facility interest		One month LIBOR plus 3.75% per annum or 4.50%
Mortgage Facility interest rate LIBOR		3.75%
Debt instrument fixed rate		4.50%
Amounts classified as long-term debt		$ 4,150,000
Debt obligation outstanding		$ 4,750,000	5,350,000	9,000,000
Mortgage Facility [Member]
Debt Disclosure [Line Items]
Mortgage Facility maturity date		Mar. 01, 2023
Mortgage Facility contain covenants to maintain specified net worth		$ 110,000,000
Debt obligation outstanding				$ 45,000,000
Selma, Texas properties [Member]
Debt Disclosure [Line Items]
Mortgage Facility maturity date		Sep. 01, 2031
Capital lease recorded as debt obligation	$ 14,300,000
Selling price of Texas properties sold to related party partnerships	$ 14,300,000
Renewal options of Texas properties
Lease term of Texas properties	10 years
Option percentage of fair value to purchase the properties		95.00%
Option percentage of fair value to purchase the properties in certain circumstances		100.00%
Option to purchase the properties from the partnerships		5 years
Debt obligation outstanding		$ 11,916,000	$ 12,264,000
Minimum amount accepted for repurchase		$ 14,300,000

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