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Lease Obligations (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Dec. 28, 2013
Leases [Abstract]      
Rental expense under operating leases $ 7,400 $ 4,500 $ 4,600
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]      
2016 8,964    
2017 9,025    
2018 6,859    
2019 4,587    
2020 4,533    
Thereafter 23,541    
Total future minimum lease commitments $ 57,509