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Long-term Debt - Additional Information (Detail)
1 Months Ended 12 Months Ended
Feb. 28, 2018
Nov. 30, 2017
USD ($)
Sep. 30, 2006
USD ($)
Jun. 27, 2019
USD ($)
Jun. 28, 2018
USD ($)
Mar. 01, 2018
USD ($)
Feb. 07, 2008
USD ($)
Debt Disclosure [Line Items]              
Date of acquisition   Nov. 30, 2017          
Purchase price financed by seller through unsecured promissory note,term   3 years          
Percentage of increase in interest   7.5          
Outstanding balance of promissory note       $ 5,750,000      
Promissory Note [Member]              
Debt Disclosure [Line Items]              
Interest paid on promissory note       $ 413,000      
Mortgage Facility Tranche A [Member]              
Debt Disclosure [Line Items]              
Amounts of term loans             $ 36,000,000
Interest rate 7.63%     4.25%      
Debt obligation outstanding       $ 9,542,000 $ 11,841,000    
Mortgage Facility Tranche B [Member]              
Debt Disclosure [Line Items]              
Amounts of term loans             9,000,000
Debt interest fixed rate 4.25%     4.25%      
Mortgage faiclity interest One-month LIBOR plus 3.50% per annum or (ii) 4.25%            
Interest rate added to LIBOR 3.50%            
Debt obligation outstanding       $ 2,386,000 2,960,000    
Selma, Texas Properties [Member]              
Debt Disclosure [Line Items]              
Capital lease recorded as debt obligation     $ 14,300,000        
Selling price of Texas properties sold to related party partnerships     $ 14,300,000        
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       $ 10,120,000 $ 10,584,000    
Minimum amount accepted for repurchase       14,300,000      
Unsecured Promissory Note [Member]              
Debt Disclosure [Line Items]              
Purchase price financed by seller through unsecured promissory note   $ 11,500,000          
Purchase price financed by seller through unsecured promissory note,term   3 years          
Unsecured promissory note, periodic payment, principal   5.5          
Unsecured promissory note, periodic payment, principal   $ 319,000          
Mortgage Facility [Member]              
Debt Disclosure [Line Items]              
Amounts of term loans             $ 45,000,000
Debt interest fixed rate           4.25%  
Mortgage Facility contain covenants to maintain specified net worth           $ 110,000,000  
Carrying amount of assets pledged as collateral       $ 69,408,000