Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Narrative)(Details)

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Stockholders' Equity (Narrative)(Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Jun. 30, 2013
Mar. 31, 2013
Dec. 30, 2012
Dec. 29, 2013
Dec. 30, 2012
Dec. 25, 2011
Class of Stock [Line Items]            
Secondary offering costs $ 508 $ 417 $ 228 $ 925 $ 228 $ 0
Convertible preferred stock, shares issued upon conversion     1   1  
Payments for repurchase of stock       $ 0 $ 22,474 $ 0
Common Stock [Member]
           
Class of Stock [Line Items]            
Stock repurchase         15,627  
Preferred Stock [Member]
           
Class of Stock [Line Items]            
Stock repurchase         1,640,035