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Summary of Status of Nonvested Shares (Parenthetical) (Detail)
12 Months Ended
May 11, 2020
Dec. 26, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Reverse stock split 1-for-10 1-for-10
Reverse stock split ratio 0.1 0.1
Restricted Stock and Restricted Stock Units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Reverse stock split 1-for-10  
Reverse stock split ratio 0.1