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Accounts Receivable And Unbilled Revenue, Net (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 27, 2013
Dec. 28, 2012
Accounts Receivable And Unbilled Revenue, Net [Abstract]    
Accounts receivable $ 27,147 $ 31,260
Unbilled revenue 8,538 6,860
Allowance for doubtful accounts (1,674) (1,251)
Accounts receivable and unbilled revenue, net $ 34,011 $ 36,869