Leases - Schedule of Other Information Related Operating Leases (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Dec. 28, 2019
Leases [Abstract]
Weighted-average remaining lease term (years)	6 years 6 months		6 years 7 months 6 days
Weighted-average discount rate	7.10%		7.20%
Cash paid for amounts included in present value of operating lease liabilities	$ 42,773	$ 39,941
Right-of-use assets obtained in exchange for operating lease liabilities	$ 17,670	$ 36,543