Leases - Other Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019	Dec. 31, 2019
Leases [Abstract]
Cash outflows for amounts included in the measurement of lease liabilities	$ 5,242	$ 4,510	$ 10,619	$ 9,871
Right-of-use assets obtained in exchange for lease obligations	$ 1,096	$ 3,964	$ 1,653	$ 4,262
Weighted average remaining lease term	4 years 10 days	4 years 5 months 8 days	4 years 10 days	4 years 5 months 8 days	4 years 8 months 4 days
Weighted-average discount rate	3.30%	3.20%	3.30%	3.20%	2.10%