Leases - Other Supplemental Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 04, 2020	Sep. 29, 2019	Oct. 04, 2020	Sep. 29, 2019
Statement of Financial Position [Abstract]
Operating cash flows from finance leases	$ 22	$ 12	$ 56	$ 31
Operating cash flows from operating leases	5,528	5,653	16,978	16,158
Financing cash flows from finance leases	442	291	1,252	808
Right-of-use assets obtained in exchange for new finance lease liabilities	1,156	252	1,709	803
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 1,517	$ 1,437	$ 5,582	$ 7,973