Note 3 - Income Taxes - Provision for Income Taxes (Details) - USD ($)	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Federal	$ 2,688,000	$ 5,420,000
State	1,208,000	2,835,000
Current Income Tax Expense (Benefit), Total	3,896,000	8,255,000
Federal	(23,200,000)	24,385,000
State	(7,621,000)	7,510,000
Deferred Income Tax Expense (Benefit), Total	(30,821,000)	31,895,000
Income Tax Expense (Benefit), Total	$ (26,925,000)	$ 40,150,000