Note 5 - Other Investments - Schedule of Other Investments (Details) - USD ($)	12 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Investment in unconsolidated affiliates	$ 17,187,093	$ 13,773,075
Capital contributions payable	0	804,506
Equity in earnings of unconsolidated affiliate	2,084,990	73,327
Undistributed earnings, net of income taxes, of MVP in retained earnings, excluding impairment	9,683,797	8,135,482
Cash investment	2,133,534	5,260,863
Change in accrued capital calls	(804,506)	(1,336,131)
Impairment of unconsolidated affiliates	0	(55,092,303)
Change in investment in unconsolidated affiliates	3,414,018	(51,094,244)
MVP [Member]
Investment in unconsolidated affiliates	17,096,476	13,689,370
Capital contributions payable	0	804,404
Southgate [Member]
Investment in unconsolidated affiliates	90,617	83,705
Capital contributions payable	$ 0	$ 102

Capital contributions remaining to be paid pursuant to the capital call notice.

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The amount of change in investment in unconsolidated affiliate.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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The cash outflow associated with the purchase of noncontrolling interest during the period.

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Amount of consolidated retained earnings that represent undistributed (not yet received) earnings from 50 percent or less owned persons accounted for by the equity method (equity method investees).

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