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Business Combinations - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Nov. 08, 2019
Feb. 29, 2020
Nov. 30, 2019
Feb. 23, 2019
Feb. 29, 2020
Feb. 23, 2019
Business Acquisition [Line Items]            
Acquisition related costs     $ 600   $ 600  
Acquisition-related costs expensed   $ 0   $ 0 9,950 $ 0
Newmar            
Business Acquisition [Line Items]            
Stock consideration discount 7.00%          
Weighted-average useful life 10 years 6 months          
Acquisition related costs         10,600  
Acquisition-related costs expensed         $ 10,000  
Newmar | Newmar            
Business Acquisition [Line Items]            
Percent of voting interest acquired 100.00%