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		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Total revenue	$ 21,565	$ 21,604	$ 34,597	$ 48,326
Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenue	21,565	21,604	34,597	48,326
Operating Segments | Asia
Disaggregation Of Revenue [Line Items]
Total revenue	1,679	1,093	6,357	12,466
Operating Segments | Canada
Disaggregation Of Revenue [Line Items]
Total revenue	659	481	1,057	888
Operating Segments | Europe
Disaggregation Of Revenue [Line Items]
Total revenue	11,432	1,704	12,743	2,879
Operating Segments | United States
Disaggregation Of Revenue [Line Items]
Total revenue	7,305	18,055	13,324	31,419
Operating Segments | Other
Disaggregation Of Revenue [Line Items]
Total revenue	$ 490	$ 271	$ 1,116	$ 674