Note 14 - Guarantees (Details Textual) - USD ($) $ in Millions	3 Months Ended
Mar. 26, 2022	Dec. 25, 2021
Non-current Other Accrued Liabilities [Member]
Product Warranty Accrual, Noncurrent	$ 0.9	$ 1.1
Minimum [Member]
Standard Product Warranty Term (Month)	12 months
Maximum [Member]
Standard Product Warranty Term (Month)	36 months

Carrying value as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer) for estimated claims under standard and extended warranty protection rights granted to customers.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.24)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Name:	us-gaap_ProductWarrantyAccrualNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant