Property, Equipment and Improvements, Net - Tabular (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Property, Plant and Equipment [Line Items]
Property, equipment and improvements, gross	$ 9,182	$ 9,047
Less accumulated depreciation and amortization	(8,535)	(8,283)
Property, equipment and improvements, net	647	764
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, equipment and improvements, gross	224	224
Equipment
Property, Plant and Equipment [Line Items]
Property, equipment and improvements, gross	8,842	8,707
Automobiles
Property, Plant and Equipment [Line Items]
Property, equipment and improvements, gross	$ 116	$ 116

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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