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, 2020	Dec. 31, 2019
Disaggregation Of Revenue [Line Items]
Total revenue	$ 26,722	$ 9,083
Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenue	26,722	9,083
Operating Segments | Asia
Disaggregation Of Revenue [Line Items]
Total revenue	11,373	445
Operating Segments | Canada
Disaggregation Of Revenue [Line Items]
Total revenue	407	473
Operating Segments | Europe
Disaggregation Of Revenue [Line Items]
Total revenue	1,175	1,413
Operating Segments | United States
Disaggregation Of Revenue [Line Items]
Total revenue	13,364	6,597
Operating Segments | Other
Disaggregation Of Revenue [Line Items]
Total revenue	$ 403	$ 155