Commitments and Contingencies - Operating Lease Liability (Details) - USD ($) $ in Thousands	Apr. 03, 2021	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Accrued liabilities - current portion of operating leases	$ 3,019	$ 2,994
Operating leases	12,167	$ 12,946
Operating lease liability	$ 15,186
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent