Note N - Lease Liabilities - Future Minimum Rental Commitments Under Noncancellable Leases (Details) $ in Thousands	Dec. 25, 2020 USD ($)
2021, Operating Leases	$ 1,395
2021, Finance Leases	389
2022, Operating Leases	2,441
2022, Finance Leases	778
2023, Operating Leases	2,162
2023, Finance Leases	769
2024, Operating Leases	1,932
2024, Finance Leases	724
2025, Operating Leases	1,703
2025, Finance Leases	482
Thereafter, Operating Leases	11,861
Thereafter, Finance Leases	4,307
Total future lease payments, Operating Leases	21,494
Total future lease payments, Finance Leases	7,449
Less: Amount representing interest, Operating Leases	(6,802)
Less: Amount representing interest, Finance Leases	(1,929)
Present value of future payments, Operating Leases	14,692
Present value of future payments, Finance Leases	$ 5,520