Leases - Summary of Supplemental Operating Lease Information (Details) - USD ($) $ in Thousands	Dec. 26, 2020	Dec. 28, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 29,301	$ 26,922
Current portion of operating lease liabilities	6,259	5,250
Noncurrent operating lease liabilities	21,602	22,388
Total operating lease liabilities	$ 27,861	$ 27,638
Weighted average discount rate (as a percent)	3.91%	5.82%
Weighted average remaining lease term (in years)	5 years 11 months 26 days	8 years 4 months 6 days