Note N - Lease Liabilities - Future Minimum Rental Commitments Under Noncancellable Leases (Details) $ in Thousands	Mar. 26, 2021 USD ($)
2021, Operating Leases	$ 626
2021, Finance Leases	197
2022, Operating Leases	2,391
2022, Finance Leases	789
2023, Operating Leases	2,119
2023, Finance Leases	780
2024, Operating Leases	1,898
2024, Finance Leases	736
2025, Operating Leases	1,663
2025, Finance Leases	496
Thereafter, Operating Leases	11,535
Thereafter, Finance Leases	4,313
Total future lease payments, Operating Leases	20,232
Total future lease payments, Finance Leases	7,311
Less: Amount representing interest, Operating Leases	(6,331)
Less: Amount representing interest, Finance Leases	(1,865)
Present value of future payments, Operating Leases	13,901
Present value of future payments, Finance Leases	$ 5,446