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Revenue Recognition - Summary of Revenue from the Sale of Products and Services Under Contracts with Customers Excludes All Revenue Earned from Rental Contracts by Geographic Areas (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disaggregation Of Revenue [Line Items]    
Total revenue $ 13,032 $ 26,722
Operating Segments    
Disaggregation Of Revenue [Line Items]    
Total revenue 13,032 26,722
Operating Segments | Asia    
Disaggregation Of Revenue [Line Items]    
Total revenue 4,678 11,373
Operating Segments | Canada    
Disaggregation Of Revenue [Line Items]    
Total revenue 398 407
Operating Segments | Europe    
Disaggregation Of Revenue [Line Items]    
Total revenue 1,311 1,175
Operating Segments | United States    
Disaggregation Of Revenue [Line Items]    
Total revenue 6,019 13,364
Operating Segments | Other    
Disaggregation Of Revenue [Line Items]    
Total revenue $ 626 $ 403