Note 16 - Income Taxes - Components of the Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Current federal income tax expense	$ 12,575	$ 10,413	$ 5,291
Current state income tax expense	2,516	2,408	1,311
Total current income tax expense	15,091	12,821	6,602
Deferred federal income tax benefit	(2,246)	(3,283)	(1,334)
Deferred state income tax benefit	(362)	(672)	(141)
Total deferred income tax benefit	(2,608)	(3,955)	(1,475)
Total provision for income taxes	$ 12,483	$ 8,866	$ 5,127