Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2021	Jun. 28, 2020	Jul. 04, 2021	Jun. 28, 2020	Dec. 31, 2020
Lessor, Lease, Description [Line Items]
Operating lease, cost	$ 2,021	$ 2,147	$ 4,023	$ 4,053
Operating lease, payments	2,014	2,091	4,075	3,954
Lease, cost	38	23	78	62
Operating lease liability	$ 24,250		$ 24,250		$ 26,230
Weighted average discount rate	3.80%		3.80%		4.00%
Weighted average remaining lease term	4 years 9 months 18 days		4 years 9 months 18 days		5 years 1 month 6 days
Carrying value operating lease right-of-use assets impaired		$ 0		$ 0
Contract termination costs
Lessor, Lease, Description [Line Items]
Operating lease liability	$ 2,264		$ 2,264		$ 2,877