Note 4 - Amounts for Goodwill and Changes in Carrying Value by Operating Segment (Details) - USD ($)	12 Months Ended
	Jan. 02, 2016	Dec. 27, 2014	Dec. 28, 2013
Electronics [Member]
Goodwill	$ 58,246,000	$ 60,510,000	$ 60,446,000
Electronics	(524,000)
Electronics	(1,740,000)	(1,590,000)
Goodwill, Acquired During Period		1,654,000
Automotive [Member]
Goodwill	80,262,000	81,717,000	84,981,000
Electronics	(3,449)	$ (3,264)
Goodwill, Acquired During Period	1,994,000
Industrial [Member]
Goodwill	51,259,000	$ 54,029,000	41,037,000
Electronics	$ (2,770)	(1,928)
Goodwill, Acquired During Period		14,920,000
Goodwill	$ 189,767,000	196,256,000	$ 186,464,000
Electronics	(7,959)	(6,782)
Goodwill, Acquired During Period	$ 1,470,000	$ 16,574,000