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Other Current Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 30, 2017
Other Liabilities Disclosure [Abstract]    
Employee benefits $ 5,819 $ 2,169
Insurance reserves and retention 4,886 4,070
State income taxes payable 3,298 14
Property, sales, and other non-income taxes payable 3,254 3,226
Accrued interest and other 845 1,293
Total 18,102 10,772
Current portion of cash-settled Stock Appreciation Rights $ 4,400  
401K Employer matching contribution accrued liability   $ 1,000