Note 10 - Segment and Geographic Information - Summary of Property, Plant and Equipment and Other Long Lived Assets in Geographical Area (Details) - USD ($) $ in Thousands	Dec. 26, 2020	Dec. 28, 2019
Property plant and equipment, net	$ 66,916	$ 70,912
Goodwill and other intangible assets	485,989	513,688
GERMANY
Property plant and equipment, net	19,817	25,234
Goodwill and other intangible assets	232,925	228,476
UNITED STATES
Property plant and equipment, net	17,800	16,671
Goodwill and other intangible assets	177,585	207,642
JAPAN
Property plant and equipment, net	13,231	9,964
Goodwill and other intangible assets	3,703	3,872
Malaysia [Member]
Property plant and equipment, net	3,986	7,151
Goodwill and other intangible assets	45,435	44,140
PHILIPPINES
Property plant and equipment, net	9,333	8,637
Rest of the World [Member]
Property plant and equipment, net	2,749	3,255
Goodwill and other intangible assets	7,866	7,453
SINGAPORE
Goodwill and other intangible assets	13,469	13,915
SWITZERLAND
Goodwill and other intangible assets	$ 5,006	$ 8,190