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Segment Information - Major customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Customer Revenues	$ 12,369	$ 11,388
Customer A | Sales Revenue, Net | Customer Concentration Risk
Segment Reporting Information [Line Items]
Customer Revenues		$ 1,100
Concentration risk percentage		10.00%
Customer B | Sales Revenue, Net | Customer Concentration Risk
Segment Reporting Information [Line Items]
Customer Revenues	$ 1,900	$ 600
Concentration risk percentage	16.00%	5.00%
Customer B | Accounts Receivable | Customer Concentration Risk
Segment Reporting Information [Line Items]
Accounts receivable, gross	$ 10,500
Concentration risk percentage	40.00%

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- Definition

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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