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Long-Term Debt (Narrative) (Details) - Credit Facility [Member] - USD ($)
$ in Millions
6 Months Ended
Sep. 21, 2020
Sep. 03, 2020
Sep. 02, 2020
Nov. 28, 2020
Debt Instrument [Line Items]        
Credit facility, maximum borrowing capacity       $ 120.0
Increase in interest rate spread   0.25%    
Credit facility, commitment fee   0.25%    
Repayment of credit facility $ 20.0      
Credit facility, expiration date       Oct. 17, 2022
Credit facility, remaining borrowing capacity       $ 50.7
Credit facility, outstanding balance       $ 68.0
Federal Funds Rate [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate       0.50%
Eurodollar Rate [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate       1.00%
Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Credit facility, maximum borrowing capacity   $ 120.0 $ 90.0  
Credit facility, increase (decrease) in borrowing capacity   $ 30.0    
Letter of Credit [Member]        
Debt Instrument [Line Items]        
Credit facility, maximum borrowing capacity     5.0  
Credit facility, outstanding balance       $ 1.3
Reducing Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Credit facility, maximum borrowing capacity     $ 30.0  
Minimum [Member]        
Debt Instrument [Line Items]        
Credit facility, commitment fee     0.15%  
Credit facility, effective interest rate       2.00%
Minimum [Member] | LIBOR [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate   0.25% 0.00% 1.25%
Minimum [Member] | Base Rate [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate       0.25%
Maximum [Member]        
Debt Instrument [Line Items]        
Credit facility, commitment fee     0.25%  
Credit facility, effective interest rate       2.23%
Maximum [Member] | LIBOR [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate       1.50%
Maximum [Member] | Base Rate [Member]        
Debt Instrument [Line Items]        
Interest spread on variable rate       0.50%