Accumulated Other Comprehensive Loss (Details) $ in Thousands	3 Months Ended
	Apr. 03, 2020 USD ($)
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 417,172
Other comprehensive income (loss)	(6,241)
Amounts reclassified from accumulated other comprehensive loss (1)	172	[1]
Ending Balance	413,103
Total Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(18,113)
Ending Balance	(24,182)
Cumulative Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(9,218)
Other comprehensive income (loss)	(6,806)
Ending Balance	(16,024)
Pension Liability Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(8,895)
Other comprehensive income (loss)	565
Amounts reclassified from accumulated other comprehensive loss (1)	172	[1]
Ending Balance	$ (8,158)

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