Leases - Schedule of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2020	Sep. 28, 2019	Oct. 03, 2020	Sep. 28, 2019
Leases [Abstract]
Amortization of ROU assets	$ 390	$ 989	$ 668	$ 2,640
Interest on lease liabilities	0	0	0	0
Operating lease costs	6,031	5,850	19,179	16,834
Variable lease costs	3,110	1,463	5,766	4,108
Sublease income	(146)	(479)	(1,113)	(4,110)
Total lease costs	$ 9,385	$ 7,823	$ 24,500	$ 19,472