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Related Party Transactions - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Aug. 17, 2020
Dec. 27, 2020
May 10, 2020
Related Party Transaction [Line Items]      
Shares issued to related parties     130,000
Expense related to issuance of shares   $ 0.4  
Vann A. Avedisian Trust [Member]      
Related Party Transaction [Line Items]      
Shares issued to related parties     41,311
KGT Investments [Member]      
Related Party Transaction [Line Items]      
Shares issued to related parties     43,571
The Khimji Foundation [Member]      
Related Party Transaction [Line Items]      
Shares issued to related parties     45,118
The Vann Group [Member]      
Related Party Transaction [Line Items]      
Ownership percentage related party 2.69%