Leases - Supplemental Disclourses of Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jul. 02, 2019	Jun. 30, 2020	Jul. 02, 2019
Leases [Abstract]
Cash paid for operating lease liabilities	$ 6,066	$ 10,813	$ 13,574	$ 21,506
Cash paid for finance lease liabilities	270	160	452	377
Cash paid for lease liabilities	6,336	10,973	14,026	21,883
Right-of-use assets obtained in exchange for new operating lease liabilities	4,557	2,049	10,281	5,210
Right-of-use assets obtained in exchange for new finance lease liabilities	1,238	179	2,842	229
Right-of-use assets obtained in exchange for new lease liabilities	$ 5,795	$ 2,228	$ 13,123	$ 5,439