Property, Equipment and Improvements, Net - Tabular (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 8,943	$ 8,719
Less accumulated depreciation and amortization	(7,896)	(7,446)
Property, equipment and improvements, net	1,047	1,273
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	224	224
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	8,603	8,397
Automobiles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 116	$ 98

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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