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Segment Information - Sales By Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting, Revenue Reconciling Item [Line Items]
Customer Revenues	$ 54,361	$ 49,208
% of total	100.00%	100.00%
Americas
Segment Reporting, Revenue Reconciling Item [Line Items]
Customer Revenues	$ 52,486	$ 45,321
% of total	96.00%	92.00%
Europe
Segment Reporting, Revenue Reconciling Item [Line Items]
Customer Revenues	$ 1,407	$ 3,203
% of total	3.00%	7.00%
Asia
Segment Reporting, Revenue Reconciling Item [Line Items]
Customer Revenues	$ 468	$ 684
% of total	1.00%	1.00%
TS
Segment Reporting, Revenue Reconciling Item [Line Items]
Customer Revenues	$ 50,518	$ 44,585
% of total	93.00%	91.00%
TS | Americas
Segment Reporting, Revenue Reconciling Item [Line Items]
Customer Revenues	$ 49,285	$ 41,783
TS | Europe
Segment Reporting, Revenue Reconciling Item [Line Items]
Customer Revenues	1,069	2,538
TS | Asia
Segment Reporting, Revenue Reconciling Item [Line Items]
Customer Revenues	164	264
HPP
Segment Reporting, Revenue Reconciling Item [Line Items]
Customer Revenues	$ 3,843	$ 4,623
% of total	7.00%	9.00%
HPP | Americas
Segment Reporting, Revenue Reconciling Item [Line Items]
Customer Revenues	$ 3,201	$ 3,538
HPP | Europe
Segment Reporting, Revenue Reconciling Item [Line Items]
Customer Revenues	338	665
HPP | Asia
Segment Reporting, Revenue Reconciling Item [Line Items]
Customer Revenues	$ 304	$ 420

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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