Leases - Summary of Supplemental Operating Lease Information (Details) - USD ($) $ in Thousands	Sep. 28, 2019	Jan. 01, 2019	Dec. 29, 2018
Lessee, Lease, Description [Line Items]
Operating lease renewal term	5 years
Weighted average remaining lease term (in years)	8 years 7 months 13 days
Operating lease right-of-use assets	$ 25,855	$ 29,500	$ 0
Current portion of operating lease liabilities	3,832	4,800	0
Noncurrent operating lease liabilities	22,712	$ 25,400	$ 0
Total operating lease liabilities	$ 26,544
Weighted average discount rate (as a percent)	5.83%
Minimum [Member]
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term (in years)	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term (in years)	15 years