Note 11 - Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands		Sep. 24, 2022	Dec. 25, 2021
2022, operating leases	[1]	$ 1,615
2022, finance leases		39
2022, total		1,654
2023, operating leases	[1]	5,649
2023, finance leases		47
2023, total		5,696
2024, operating leases	[1]	5,204
2024, finance leases		10
2024, total		5,214
2025, operating leases	[1]	5,018
2025, finance leases		10
2025, total		5,028
2026, operating leases	[1]	2,705
2026, finance leases		3
2026, total		2,708
Thereafter, operating leases	[1]	9,492
Thereafter, finance leases		0
Thereafter, total		9,492
Total lease payments, operating leases	[1]	29,683
Total lease payments, finance leases		109
Total lease payments, total		29,792
Less: Interest, operating leases	[1]	(5,913)
Less: Interest, finance leases		(2)
Less: Interest, total		(5,915)
Present value of lease liabilities, finance leases		107
Present value of lease liabilities, total		23,877	$ 27,093
Other Accrued Liabilities and Long-term Lease Liabilities [Member]
Present value of lease liabilities, operating leases	[1]	$ 23,770

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