Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Narrative) (Details)

v3.21.2
Long-Term Debt (Narrative) (Details) - Revolving Credit Facility [Member] - USD ($)
May 21, 2020
Jun. 27, 2021
Debt Instrument [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 25,000,000.0  
Line of Credit Facility Additional Borrowing Capacity 25,000,000.0  
Letters of Credit, Borrowing Capacity 5,000,000.0  
Liquidity Covenant (amount) $ 5,000,000.0  
Long-term Debt   $ 0
Libor Floor [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Basis Spread on Variable Rate 1.00%  
Federal Funds Rate [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Basis Spread on Variable Rate 0.50%  
Base Rate [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Basis Spread on Variable Rate 1.00%  
Maximum [Member]    
Debt Instrument [Line Items]    
Line of credit facility, lease adjusted leverage ratio 3.50  
Minimum [Member]    
Debt Instrument [Line Items]    
Line of credit facility, lease adjusted leverage ratio 1.00