Note 4 - Details of Other Intangible Assets and Related Future Amortization Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Dec. 27, 2014
Patents Licenses And Software [Member]
Finite-Lived Intangible Asset, Useful Life	11 years 219 days	11 years 255 days
Patents, licenses and software(a)	$ 61,297	$ 62,378
Patents, licenses and software(a)	$ 41,076	$ 38,738
Distribution Rights [Member]
Finite-Lived Intangible Asset, Useful Life	12 years 146 days	12 years 146 days
Patents, licenses and software(a)	$ 45,564	$ 46,850
Patents, licenses and software(a)	$ 29,074	$ 27,422
Customer Lists, Trademarks and Tradenames [Member]
Finite-Lived Intangible Asset, Useful Life	13 years	13 years 73 days
Patents, licenses and software(a)	$ 81,233	$ 80,821
Patents, licenses and software(a)	$ 30,534	$ 25,246
Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life
Patents, licenses and software(a)	$ 4,213	$ 5,030
Patents, licenses and software(a)
Finite-Lived Intangible Asset, Useful Life	12 years 146 days	12 years 182 days
Patents, licenses and software(a)	$ 192,307	$ 195,079
Patents, licenses and software(a)	$ 100,684	$ 91,406