Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Uncertain tax positions	$ 1,527,000	$ 1,449,000	$ 0
Increase from current period positions	78,000	107,000
Interest expense	146,000	252,000
Gross unrecognized tax benefits	$ 1,925,000	$ 1,701,000