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Restructuring Plan (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 47 Months Ended
Aug. 31, 2021
Aug. 31, 2020
Aug. 31, 2021
Aug. 31, 2020
Aug. 31, 2021
Feb. 28, 2022
Restructuring Plan            
Restructuring charges $ 369 $ 34 $ 375 $ 367    
Project Refuel            
Restructuring Plan            
Incurred pre-tax restructuring costs 9,600   9,600   $ 9,600  
Restructuring charges 400   400      
Cash restructuring payments for the reporting period 300   400      
Cash restructuring payments to date         9,500  
Restructuring liability $ 100   $ 100   100  
Minimum | Project Refuel            
Restructuring Plan            
Targeted annualized profit improvement         10,500  
Maximum | Project Refuel            
Restructuring Plan            
Targeted annualized profit improvement         $ 12,500  
Scenario, Forecast | Project Refuel            
Restructuring Plan            
Expected restructuring costs           $ 10,300