Accumulated Other Comprehensive Loss (Details) $ in Thousands	9 Months Ended
	Oct. 02, 2020 USD ($)
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 417,172
Other comprehensive income (loss)	(762)
Amounts reclassified from accumulated other comprehensive loss	525	[1]
Ending Balance	451,249
Total Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(18,113)
Ending Balance	(18,350)
Cumulative Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(9,218)
Other comprehensive income (loss)	(1,006)
Ending Balance	(10,224)
Pension Liability Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(8,895)
Other comprehensive income (loss)	244
Amounts reclassified from accumulated other comprehensive loss	525	[1]
Ending Balance	$ (8,126)

[1] The amounts reclassified from accumulated other comprehensive loss were included in other income (expense) in the consolidated statements of operations.