Note 2 - Certain Significant Estimates (Details Textual)	12 Months Ended
	Dec. 25, 2021
Minimum [Member]
Product Warranty Period (Day)	30 days
Maximum [Member]
Product Warranty Period (Day)	1 year
Licensing Agreements [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	17 years
Developed Technology Rights [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years
Trademarks [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	20 years
Customer Lists [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	3 years
Customer Lists [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	14 years
Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years
Patents [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years
Patents [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years