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Segment Information - Major customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Sep. 30, 2022
Segment Reporting Information [Line Items]
Customer Revenues	$ 13,269	$ 11,981	$ 31,613	$ 24,350
Customer A | Sales Revenue, Net | Customer Concentration Risk
Segment Reporting Information [Line Items]
Customer Revenues	$ 100	$ 2,400	$ 2,300	$ 4,300
Concentration risk percentage	1.00%	20.00%	7.00%	18.00%
Customer B | Sales Revenue, Net | Customer Concentration Risk
Segment Reporting Information [Line Items]
Customer Revenues	$ 1,300	$ 600	$ 1,800	$ 700
Concentration risk percentage	10.00%	5.00%	6.00%	3.00%
Customer C | Accounts Receivable | Customer Concentration Risk
Segment Reporting Information [Line Items]
Accounts receivable, gross	$ 14,100		$ 14,100		$ 15,800
Concentration risk percentage			49.00%		52.00%

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Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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