Note 4 - Goodwill and Intangible Assets (Details) - Other Intangible Assets by Segment (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013	Dec. 31, 2013
Note 4 - Goodwill and Intangible Assets (Details) - Other Intangible Assets by Segment [Line Items]
Carrying value of other intangible assets	$ 48,202		$ 48,202		$ 25,611
Acquisitions			25,627
Amoritization	(1,408)	(548)	(3,036)	(1,588)
Manufacturing [Member]
Note 4 - Goodwill and Intangible Assets (Details) - Other Intangible Assets by Segment [Line Items]
Carrying value of other intangible assets	34,735		34,735		19,626
Acquisitions			17,265
Amoritization			(2,156)
Distribution [Member]
Note 4 - Goodwill and Intangible Assets (Details) - Other Intangible Assets by Segment [Line Items]
Carrying value of other intangible assets	13,467		13,467		5,985
Acquisitions			8,362
Amoritization			$ (880)