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Matters Concerning Shareholders' Equity - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Sep. 01, 2018
Aug. 26, 2017
Sep. 01, 2018
Aug. 26, 2017
Restricted Stock Awards        
Share Based Compensation Arrangements And Share Repurchase Plan [Line Items]        
Recorded stock-based compensation expense $ 1,005 $ 1,390 $ 1,264 $ 2,460
Total unrecognized compensation expense related to unvested stock option awards $ 21,331   $ 21,331  
Weighted average period for recognizing unrecognized compensation expense, in years 1 year 6 months      
Shares awarded | shares 2,958,373      
Time-Based Restricted Shares        
Share Based Compensation Arrangements And Share Repurchase Plan [Line Items]        
Awards other than options vested in period | shares 1,134,773      
Vesting period, years 3 years      
Grant date fair value $ 2.38      
Time-Based Restricted Shares | Board of Directors        
Share Based Compensation Arrangements And Share Repurchase Plan [Line Items]        
Shares awarded | shares 290,904      
Vesting period, years 1 year      
Grant date fair value $ 2.97      
Performance Shares        
Share Based Compensation Arrangements And Share Repurchase Plan [Line Items]        
Grant date fair value $ 2.38