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	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Disaggregation Of Revenue [Line Items]
Total revenue	$ 75,864	$ 34,136
Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenue	75,864	34,136
Operating Segments | Asia
Disaggregation Of Revenue [Line Items]
Total revenue	17,268	3,613
Operating Segments | Canada
Disaggregation Of Revenue [Line Items]
Total revenue	1,550	2,054
Operating Segments | Europe
Disaggregation Of Revenue [Line Items]
Total revenue	7,693	4,813
Operating Segments | United States
Disaggregation Of Revenue [Line Items]
Total revenue	47,101	22,294
Operating Segments | Other
Disaggregation Of Revenue [Line Items]
Total revenue	$ 2,252	$ 1,362