Segment and Revenue Information - Schedule of Revenue by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Segment revenue	$ 32,650	$ 38,406	$ 74,886	$ 71,832
United States and Canada
Segment Reporting Information [Line Items]
Segment revenue	29,652	33,106	67,708	62,452
Asia
Segment Reporting Information [Line Items]
Segment revenue	1,728	4,145	4,814	7,170
Europe
Segment Reporting Information [Line Items]
Segment revenue	936	558	1,756	1,214
Other
Segment Reporting Information [Line Items]
Segment revenue	$ 334	$ 597	$ 608	$ 996

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details