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Accrued Expenses (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 30, 2017
Payables and Accruals [Abstract]    
Compensation and benefits $ 7,493 $ 9,276
Provision for customer rebates, claims and allowances 8,446 9,820
Advanced customer deposits 6,724 5,717
Outstanding checks in excess of cash 2,259 379
Other 5,989 6,168
Accrued expenses $ 30,911 $ 31,360