Accumulated Other Comprehensive Loss (Details) $ in Thousands	6 Months Ended
	Jul. 03, 2020 USD ($)
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 417,172
Other comprehensive income (loss)	(4,817)
Amounts reclassified from accumulated other comprehensive loss (1)	346	[1]
Ending Balance	431,898
Total Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(18,113)
Ending Balance	(22,584)
Cumulative Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(9,218)
Other comprehensive income (loss)	(5,308)
Ending Balance	(14,526)
Pension Liability Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(8,895)
Other comprehensive income (loss)	491
Amounts reclassified from accumulated other comprehensive loss (1)	346	[1]
Ending Balance	$ (8,058)

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