Note 6 - Goodwill and Other Intangible Assets - Details of Other Intangible Assets and Related Future Amortization Expense (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Jan. 02, 2016
Finite-Lived Intangible Asset, Useful Life		12 years 328 days	12 years 146 days
Finite-lived intangible assets, gross		$ 335,307	$ 192,307
Finite-lived intangible assets, accumulated amortization		$ 122,281	$ 100,684
Patents, Licenses, and Software [Member]
Finite-Lived Intangible Asset, Useful Life		11 years 146 days	11 years 219 days
Finite-lived intangible assets, gross		$ 131,611	$ 61,297
Finite-lived intangible assets, accumulated amortization		$ 48,004	$ 41,076
Distribution Rights [Member]
Finite-Lived Intangible Asset, Useful Life		12 years 36 days	12 years 146 days
Finite-lived intangible assets, gross		$ 49,150	$ 45,564
Finite-lived intangible assets, accumulated amortization		$ 30,155	$ 29,074
Customer Lists, Trademarks, and Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life		14 years 146 days	13 years
Finite-lived intangible assets, gross		$ 150,227	$ 81,233
Finite-lived intangible assets, accumulated amortization		40,463	30,534
Trade Names [Member]
Finite-lived intangible assets, gross	[1]	4,319	4,213
Finite-lived intangible assets, accumulated amortization	[1]	$ 3,659

[1] Tradenames with indefinite lives.