Accumulated Other Comprehensive Loss - Schedule of Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Postemployment Benefits [Abstract]
Amortization of actuarial losses	$ 47	$ 70	$ 93	$ 142
Income tax		(9)		(18)
Net of tax	$ 47	$ 61	$ 93	$ 124

Amount, after tax, of reclassification adjustment from accumulated other comprehensive (income) loss for net periodic benefit cost (credit) of defined benefit plan.

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