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Long-Term Debt (Details) - USD ($)
3 Months Ended
Dec. 21, 2016
Mar. 21, 2017
Dec. 27, 2016
Debt Instrument [Line Items]      
Fixed charge coverage ratio   1.25% 2.00%
Revolving Credit Facility [Member] | Three-year Unsecured [Member]      
Debt Instrument [Line Items]      
Revolving credit facility - current borrowing capacity   $ 6,800,000  
LIBOR interest rate   Borrowings under the credit facility bear interest, at the option of the Company, based on (i) LIBOR plus 1.50% or (ii) the prime rate as defined in the credit facility.  
Percentage of commitment fee paid on unused revolving loan facility   0.25%  
Revolving credit facility, amount outstanding   $ 22,000,000 $ 0
Revolving Credit Facility [Member] | Second Amendment [Member]      
Debt Instrument [Line Items]      
Credit facility maturity date Oct. 15, 2019    
Revolving credit facility - current borrowing capacity $ 10,000,000    
Incremental increases in credit facility 5,000,000    
Revolving credit facility-maximum borrowing capacity $ 30,000,000    
Revolving Credit Facility [Member] | LIBOR [Member] | Three-year Unsecured [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate   1.50%  
Letters Of Credit [Member]      
Debt Instrument [Line Items]      
Outstanding letters of credit   $ 1,200,000 $ 1,200,000