Leases - Summary of Supplemental Operating Lease Information (Details) - USD ($) $ in Thousands	Jun. 29, 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)	9 years 5 months 1 day
Operating lease right-of-use assets	$ 28,590	$ 30,800	$ 0
Current portion of operating lease liabilities	4,754	4,900	0
Noncurrent operating lease liabilities	24,491	$ 26,600	$ 0
Total operating lease liabilities	$ 29,245
Weighted average discount rate (as a percent)	4.13%
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