Income Taxes (Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
United States	$ 5,380	$ 3,756	$ 7,981
International	3,619	3,707	3,164
Income before income taxes	$ 8,999	$ 7,463	$ 11,145