Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details 2)

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Stockholders' Equity (Details 2) (USD $)
In Thousands, except Share data, unless otherwise specified
0 Months Ended
Jun. 28, 2014
Dec. 28, 2013
Jun. 28, 2014
Maximum
Warrant [Member]
Jun. 28, 2014
Minimum
Warrant [Member]
Jun. 30, 2014
GE [Member]
Subsequent Event [Member]
Warrant [Member]
Jun. 30, 2014
GE [Member]
Subsequent Event [Member]
Warrant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Warrants outstanding (shares) $ 278          
Exercise price of warrants (usd per share)     $ 3.55 $ 0.73   $ 0.73
Number of warrants called (shares)           254,000
Forfeited (shares)         46,651  
Share price (usd per share)           $ 3.99
Common Stock, issued shares (in shares) 5,581,000 5,571,000       207,391
Number of authorized shares of preferred stock 2,000,000