Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Narrative) (Details)

v3.21.1
Long-Term Debt (Narrative) (Details)
3 Months Ended
Mar. 28, 2021
USD ($)
Debt Instrument [Line Items]  
Liquidity Covenant (amount) $ 5,000,000.0
Revolving Credit Facility [Member]  
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
Long-term Debt $ 0
Revolving Credit Facility [Member] | Libor Floor [Member]  
Debt Instrument [Line Items]  
Debt Instrument, Basis Spread on Variable Rate 1.00%
Revolving Credit Facility [Member] | Federal Funds Rate [Member]  
Debt Instrument [Line Items]  
Debt Instrument, Basis Spread on Variable Rate 0.50%
Revolving Credit Facility [Member] | Base Rate [Member]  
Debt Instrument [Line Items]  
Debt Instrument, Basis Spread on Variable Rate 1.00%
Maximum [Member] | Revolving Credit Facility [Member]  
Debt Instrument [Line Items]  
Line of credit facility, lease adjusted leverage ratio 3.50
Minimum [Member] | Revolving Credit Facility [Member]  
Debt Instrument [Line Items]  
Line of credit facility, lease adjusted leverage ratio 1.00