Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 29, 2012
Sep. 29, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Oct. 01, 2011
Jul. 02, 2011
Apr. 02, 2011
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Components of loss before income taxes                      
Domestic operations                 $ (37,469) $ (16,976) $ (2,540)
Foreign operations                 554 327 832
Loss before income taxes $ (32,013) $ (2,670) $ (1,568) $ (664) $ (8,747) $ (5,306) $ (2,369) $ (227) $ (36,915) $ (16,649) $ (1,708)