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Operations Optimization Costs (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Jun. 25, 2018
Apr. 30, 2020
Aug. 31, 2020
May 31, 2020
Feb. 29, 2020
Nov. 30, 2019
Nov. 30, 2018
Aug. 31, 2018
Aug. 31, 2020
Feb. 29, 2020
Aug. 31, 2019
Feb. 28, 2019
Aug. 31, 2019
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2018
Operations Optimization Costs                                
Percentage of temporary reduction in the base salaries of its named Executive Officers and select members of Senior Management, as well as the cash compensation of the non-employee members of the Board       20.00%                        
Severance costs       $ 183                        
Write-down of certain assets under construction                           $ 405    
Exit costs related to facilities                           807 $ 986 $ 1,272
Gain on sale of property                           2,551    
Granite Falls Location                                
Operations Optimization Costs                                
Exit costs related to facilities                 $ 0 $ 559 $ 526 $ 526        
Pawtucket, RI manufacturing facility                                
Operations Optimization Costs                                
Restructuring Period 2 months                              
Exit costs related to facilities       85     $ 260 $ 1,272         $ 0      
Anticipated future exit costs       0                        
Proceeds from the sale of property   $ 1,810   1,810                        
Gain on sale of property       760                   760    
Engineering Studies related to Facility Consolidation and Rationalization Initiative                                
Operations Optimization Costs                                
Business Development     $ 0 $ 0 $ 0 $ 150                 $ 200  
Write-down of certain assets under construction                           405    
Gain on sale of property                           $ 170