Leases Supplemental Balance Sheet Information Related To Leases (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Dec. 31, 2020
Leases [Abstract]
Total operating lease right-of-use assets	$ 54,660	$ 54,787
Accrued liabilities	15,300	14,742
Long-term operating lease liabilities	45,642	46,398
Total operating lease liabilities	60,942	61,140
Other long-lived assets, at cost	729	764
Accumulated depreciation	(481)	(483)
Other long-lived assets, net	$ 248	$ 281
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued liabilities
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other long-lived assets