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Contingencies (Details)
$ in Thousands
12 Months Ended
Mar. 07, 2016
USD ($)
Apr. 21, 2014
USD ($)
Dec. 01, 2012
Juror
Loss Contingencies [Line Items]      
Number of jurors | Juror     6
TransWeb [Member]      
Loss Contingencies [Line Items]      
Litigation settlement   $ 26,147  
Gain (loss) on legal settlement $ 27,250