Summary of Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Apr. 03, 2020		Dec. 31, 2019
Operating leases
Operating lease right-of-use assets	$ 34,332		$ 35,180
Current portion of operating lease liabilities	4,646		5,043
Operating lease liabilities	33,036		34,108
Total operating lease liabilities	37,682		39,151
Finance leases
Finance lease right-of-use assets gross	19,455		19,748
Finance lease right-of-use assets accumulated depreciation	(4,914)		(4,649)
Finance lease assets included in property, plant and equipment, net	$ 14,541		$ 15,099
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentNet		us-gaap:PropertyPlantAndEquipmentNet
Current portion of finance lease liabilities	$ 9,130		$ 1,307
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherAccruedLiabilitiesCurrent		us-gaap:OtherAccruedLiabilitiesCurrent
Noncurrent portion of finance lease liabilities	$ 6,334		$ 14,845
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent		us-gaap:OtherLiabilitiesNoncurrent
Total finance lease liabilities	$ 15,464	[1]	$ 16,152
Weighted-average remaining lease term (in years)
Operating leases	10 years		10 years 2 months 12 days
Finance leases	4 years 6 months		4 years 8 months 12 days
Weighted-average discount rate
Operating leases	5.51%		5.60%
Finance leases	3.05%		3.09%

[1] Future minimum lease payments under finance leases include the exercise price of an option to purchase a facility in Germany in 2021.