Note 11 - Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands		Jun. 25, 2022	Dec. 25, 2021
2022, operating leases	[1]	$ 3,237
2022, finance leases		84
2022, total		3,321
2023, operating leases	[1]	5,731
2023, finance leases		48
2023, total		5,779
2024, operating leases	[1]	5,260
2024, finance leases		11
2024, total		5,271
2025, operating leases	[1]	5,058
2025, finance leases		11
2025, total		5,069
2026, operating leases		2,738
2026, finance leases		3
2026, total		2,741
Thereafter, operating leases	[1]	9,586
Thereafter, finance leases		0
Thereafter, total		9,586
Total lease payments, operating leases	[1]	31,610
Total lease payments, finance leases		157
Total lease payments, total		31,767
Less: Interest, operating leases	[1]	(6,361)
Less: Interest, finance leases		(3)
Less: Interest, total		(6,364)
Present value of lease liabilities, finance leases		154
Present value of lease liabilities, total		25,403	$ 27,093
Other Accrued Liabilities and Long-term Lease Liabilities [Member]
Present value of lease liabilities, operating leases	[1]	$ 25,249

[1] Excludes sublease income of $0.1 million in 2023.