Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details Textual)

v2.4.0.8
Fair Value Measurements (Details Textual) (USD $)
3 Months Ended 6 Months Ended
Jun. 29, 2013
Dec. 29, 2012
Jun. 29, 2013
Jun. 30, 2012
Fair Value Measurements (Textual) [Abstract]        
impairment loss on product design $ 4,832,000 $ 1,960,000 $ 4,832,000 $ 0
Fair Value Measurements (Additional Textual) [Abstract]        
Transfers into or out of level 1 and level 2 assets     0 0
Impairment loss     6,077,000 0
Impairment loss on intangible assets 1,245,000   1,245,000  
Internally developed software [Member]
       
Fair Value Measurements (Textual) [Abstract]        
impairment loss on product design     $ 4,832,000