Other (Income) Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Other Operating Income and Expenses, Net [Abstract]
Loss on property, plant and equipment disposals	$ 1	$ 82	$ 62	$ 82
(Gain) loss on currency exchanges	82	5	104	(3)
Amortization of intangibles	0	76	0	153
Retirement (income) expense	9	(120)	(24)	(66)
Settlement of class action litigation	0	1,514	0	1,514
Miscellaneous (income) expense	(12)	(50)	(31)	(413)
Other operating expense, net	$ 80	$ 1,507	$ 111	$ 1,267