Note 4 - Goodwill and Other Intangible Assets (Details) - Amounts for Goodwill and Changes in Carrying Value by Operating Segment (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 27, 2014		Dec. 28, 2013		Dec. 29, 2012
Goodwill [Line Items]
Fiscal Year	$ 196,256		$ 186,464		$ 133,592
Additions (Reductions)	16,574	[1]	50,793	[2]
Adjustments	(6,782)	[3]	2,079	[3]
Electronics [Member]
Goodwill [Line Items]
Fiscal Year	60,510		60,446		35,423
Additions (Reductions)	1,654	[1]	24,031	[2]
Adjustments	(1,590)	[3]	992	[3]
Automotive [Member]
Goodwill [Line Items]
Fiscal Year	81,717		84,981		56,255
Additions (Reductions)		[1]	26,762	[2]
Adjustments	(3,264)	[3]	1,964	[3]
Electrical [Member]
Goodwill [Line Items]
Fiscal Year	54,029		41,037		41,914
Additions (Reductions)	14,920	[1]		[2]
Adjustments	$ (1,928)	[3]	$ (877)	[3]

[1] Electronics addition of $1.7 million and Electrical addition of $14.9 million in 2014 resulted from business acquisitions.

[2] Electronic addition of $24.0 million and Automotive additions of $26.8 million in 2013 resulted from the acquisition of Hamlin.

[3] Adjustments reflect the impact of changes in foreign exchange rates.