Note 11 - Segment Information - Operating Segments (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Apr. 01, 2018	Dec. 30, 2018
NET SALES	$ 297,688	$ 240,563
Depreciation and amortization	11,344	8,731
Assets	1,405,067		$ 1,284,644
Operating Segments [Member]
NET SALES	297,688	240,563
Depreciation and amortization	10,063	8,073
Assets	1,249,505
Americas [Member] \| Operating Segments [Member]
NET SALES	160,626	135,225
Depreciation and amortization	3,251	3,611
Assets	507,577
Europe [Member] \| Operating Segments [Member]
NET SALES	93,050	66,556
Depreciation and amortization	4,680	2,254
Assets	544,598
Asia Pacific [Member] \| Operating Segments [Member]
NET SALES	44,012	38,782
Depreciation and amortization	2,132	$ 2,208
Assets	$ 197,330

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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