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		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Total revenue	$ 17,679	$ 6,975	$ 66,005	$ 25,575
Operating Segments
Disaggregation Of Revenue [Line Items]
Total revenue	17,679	6,975	66,005	25,575
Operating Segments | Asia
Disaggregation Of Revenue [Line Items]
Total revenue	4,088	925	16,554	2,200
Operating Segments | Canada
Disaggregation Of Revenue [Line Items]
Total revenue	279	509	1,167	1,776
Operating Segments | Europe
Disaggregation Of Revenue [Line Items]
Total revenue	3,223	1,193	6,102	3,865
Operating Segments | United States
Disaggregation Of Revenue [Line Items]
Total revenue	9,401	4,087	40,820	16,868
Operating Segments | Other
Disaggregation Of Revenue [Line Items]
Total revenue	$ 688	$ 261	$ 1,362	$ 866