Segment Information and Major Customers Net Property, Equipment and Improvements by Geographic Area (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Net property, equipment and improvements	$ 29,108	$ 27,594
North America, primarily United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net property, equipment and improvements	28,631	27,205
International, primarily Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net property, equipment and improvements	$ 477	$ 389