Note 7 - Segment and Geographic Information - Summary of Property, Plant and Equipment and Other Long Lived Assets in Geographical Area (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Property plant and equipment, net	$ 34,172	$ 18,234
Goodwill and other intangible assets	82,361	76,684
JAPAN
Property plant and equipment, net	12,137
Goodwill and other intangible assets	4,491
GERMANY
Property plant and equipment, net	7,485	6,674
Goodwill and other intangible assets	30,546	26,892
PHILIPPINES
Property plant and equipment, net	5,808	4,167
Malaysia [Member]
Property plant and equipment, net	4,622	4,067
Goodwill and other intangible assets	7,078	6,775
UNITED STATES
Property plant and equipment, net	3,064	2,398
Goodwill and other intangible assets	17,242	17,242
Rest of the World [Member]
Property plant and equipment, net	1,056	928
Goodwill and other intangible assets	996	953
SWITZERLAND
Goodwill and other intangible assets	15,450	18,264
SINGAPORE
Goodwill and other intangible assets	$ 6,558	$ 6,558