Amortizable Intangible Assets (Tables)

3 Months Ended

Mar. 29, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

Amortizable intangible assets consisted of the following (in thousands):

	March 29, 2013							December 28, 2012
	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Amortized intangible assets:
Patents and licenses	$	10,712		(9,914	)	$	798	$	10,786	$	(9,875	)	$	911
Customer relationships		1,663		(873	)		790		1,835		(917	)		918
Developed technology		1,056		(786	)		270		1,166		(853	)		313
Total	$	13,431	$	(11,573	)	$	1,858	$	13,787	$	(11,645	)	$	2,142