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Long-term Debt - Additional Information (Detail) - USD ($)		1 Months Ended			12 Months Ended
	Apr. 29, 2020	Nov. 30, 2017	Sep. 30, 2015	Sep. 30, 2006	Jun. 24, 2021	Jun. 25, 2020	Jun. 27, 2019	Feb. 07, 2008
Promissory Note [Member] | Executive Officer [Member]
Debt Disclosure [Line Items]
Interest paid on promissory note						$ 127,000	$ 413,000
Mortgage Facility Tranche A [Member]
Debt Disclosure [Line Items]
Amounts of term loans								$ 36,000,000
Debt obligation outstanding					$ 4,642,000	7,144,000
Mortgage Facility Tranche B [Member]
Debt Disclosure [Line Items]
Amounts of term loans								9,000,000
Debt obligation outstanding					1,160,000	$ 1,786,000
Selma, Texas Properties [Member]
Debt Disclosure [Line Items]
Selling price of Texas properties sold to related party partnerships				$ 14,300,000
Renewal options of Texas properties			In September 2015, we signed a lease renewal which exercised two five-year renewal options and extended the term of our Selma lease to September 18, 2026.	The lease for the Selma, Texas properties had an initial ten-year term at a fair market value rent with three five-year renewal options.
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%)
Debt obligation outstanding					8,947,000	$ 9,532,000
Minimum amount accepted for repurchase						$ 14,300,000
Decrease in base monthly lease amount					103,000
Increase in base monthly lease amount after reassessed					114,000
Unsecured Promissory Note [Member]
Debt Disclosure [Line Items]
Date of acquisition		Nov. 30, 2017
Business combination consideration transferred acquisition financing		$ 11,500,000
Purchase price financed by seller through unsecured promissory note,term		3 years
Mortgage Facility [Member]
Debt Disclosure [Line Items]
Amounts of term loans								$ 45,000,000
Mortgage Facility contain covenants to maintain specified net worth					110,000,000
Carrying amount of assets pledged as collateral					$ 62,348,000

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