Amortizable Intangible Assets (Tables)

6 Months Ended

Jun. 28, 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):

	June 28, 2013						December 28, 2012
	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets:
Patents and licenses	$	10,685	$	(9,961)	$	724	$	10,786	$	(9,875)	$	911
Customer relationships		1,600		(880)		720		1,835		(917)		918
Developed technology		1,016		(771)		245		1,166		(853)		313
Total	$	13,301	$	(11,612)	$	1,689	$	13,787	$	(11,645)	$	2,142