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Long-Term Debt (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 28, 2019
May 25, 2019
May 27, 2017
May 26, 2018
Debt Instrument [Line Items]        
Repayment of Revolving Credit Facility   $ 20,000 $ 10,000  
Credit Facility [Member]        
Debt Instrument [Line Items]        
Credit facility, maximum borrowing capacity   $ 120,000    
Credit facility, expiration date   Oct. 17, 2021    
Credit Facility [Member] | Federal Funds Rate [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate   0.50%    
Credit Facility [Member] | Eurodollar Rate [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate   1.00%    
Credit Facility [Member] | Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Credit facility, maximum borrowing capacity   $ 90,000    
Credit facility, remaining borrowing capacity   47,000    
Credit facility, outstanding balance   43,000   $ 63,000
Credit Facility [Member] | Reducing Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Credit facility, maximum borrowing capacity   30,000    
Credit facility, remaining borrowing capacity   30,000    
Credit Facility [Member] | Letter of Credit [Member]        
Debt Instrument [Line Items]        
Credit facility, maximum borrowing capacity   5,000    
Credit facility, outstanding balance   $ 1,300   $ 1,000
Credit Facility [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Credit facility, commitment fee   0.15%    
Credit Facility [Member] | Minimum [Member] | LIBOR [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate   1.25%    
Credit Facility [Member] | Minimum [Member] | Base Rate [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate   0.25%    
Credit Facility [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Credit facility, commitment fee   0.25%    
Credit Facility [Member] | Maximum [Member] | LIBOR [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate   1.50%    
Credit Facility [Member] | Maximum [Member] | Base Rate [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate   0.50%    
Credit Facility Tranche One [Member]        
Debt Instrument [Line Items]        
Credit facility, outstanding balance   $ 24,000    
Credit Facility Tranche One [Member] | 3-Month LIBOR [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate   1.50%    
Credit facility, effective interest rate   4.10%    
Credit Facility Tranche Two [Member]        
Debt Instrument [Line Items]        
Credit facility, outstanding balance   $ 10,000    
Credit Facility Tranche Three [Member]        
Debt Instrument [Line Items]        
Credit facility, outstanding balance   $ 9,000    
Subsequent Event [Member] | Credit Facility [Member]        
Debt Instrument [Line Items]        
Repayment of Revolving Credit Facility $ 5,000