Property and Equipment, Net - Property and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,377	$ 2,161
Accumulated depreciation	(2,057)	(1,850)
Property and equipment, net	320	311
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	703	599
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	154	154
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	396	391
IT Infrastructure [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	85	84
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,039	$ 933

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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