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Leases - Summary of Supplemental Cash Flow and Noncash Information Related to Leases (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 26, 2020
Dec. 28, 2019
Leases [Abstract]    
Cash paid for amounts included in the measurement of operating lease liabilities [1] $ 20,401 $ 18,636
Right-of-use assets obtained in exchange for new operating lease liabilities $ 39,009 $ 18,248
[1] Included in Net cash provided by operating activities on the Company's Statements of Cash Flows