Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Details Textual)

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Intangible Assets (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 30, 2013
Mar. 31, 2012
Intangible Assets (Textual) [Abstract]    
Amortization expense relating to intangible assets $ 106 $ 340