Annual report pursuant to Section 13 and 15(d)

Long-Term Debt (Narrative) (Details)

v3.20.4
Long-Term Debt (Narrative) (Details)
12 Months Ended
Dec. 27, 2020
USD ($)
Credit facility maximum borrowing capacity $ 25,000,000.0
Long-term debt 0
Line of Credit Facility Additional Borrowing Capacity 25,000,000.0
Liquidity Covenant Amount 5,000,000.0
Revolving Credit Facility [Member]  
Incremental Minimum Borrowing Amount $ 5,000,000.0
Revolving Credit Facility [Member] | Federal Funds Rate [Member]  
Basis spread on variable rate 0.50%
Revolving Credit Facility [Member] | Base Rate [Member]  
Basis spread on variable rate 1.00%
Maximum | Revolving Credit Facility [Member]  
Line of credit facility, covenant lease adjusted leverage ratio 3.50
Minimum | Revolving Credit Facility [Member]  
Line of credit facility, covenant lease adjusted leverage ratio 1.00
Minimum | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR)  
Basis spread on variable rate 1.00%