Note 11 - Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands		Dec. 25, 2021	Dec. 26, 2020
Operating lease assets		$ 25,060	$ 29,203
Total lease assets		25,483	29,689
Total lease liabilities		$ 27,093	$ 31,253
Operating leases (Year)		6 years 10 months 24 days	7 years 3 months 18 days
Finance leases (Year)		1 year 9 months 18 days	2 years 3 months 18 days
Operating leases		6.30%	6.30%
Finance leases		0.70%	0.00%
Property, Plant and Equipment, Net [Member]
Finance lease assets	[1]	$ 423	$ 486
Other Accrued Liabilities [Member]
Operating, current		4,886	5,287
Finance, current		167	179
Long-term Lease Liabilities [Member]
Operating, noncurrent		21,977	25,565
Finance, noncurrent		$ 63	$ 222

[1] Finance lease assets are recorded net of accumulated amortization of $0.1 million in 2021 and 2020.