Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2017

Payables and Accruals [Abstract]

Schedule of Accrued Expenses

Accrued expenses consisted of the following as of the dates presented:

	December 31, 2017		January 1, 2017
	(in thousands)
Current:
Salaries and wages	$	11,366	$	15,188
Insurance	6,614		6,629
Taxes, other than income taxes	13,151		12,944
Other accrued operating expenses	5,485		5,337
Accrued expenses	$	36,616	$	40,098
Noncurrent:
Insurance	$	8,311	$	9,183