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Note 6 - Other Investments - Schedule of Other Investments (Details) - USD ($)	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2023
Investment in unconsolidated affiliates	$ 18,654,928		$ 17,187,093
Equity in earnings of unconsolidated affiliate	1,467,835	$ 1,232
Undistributed earnings, net of income taxes, of MVP in retained earnings, excluding impairment	10,773,811		9,683,797
Cash investment	(0)	818,178
Change in accrued capital calls	0	39,466
Change in investment in unconsolidated affiliates	1,467,835	$ 858,876
MVP [Member]
Investment in unconsolidated affiliates	18,564,311		17,096,476
Southgate [Member]
Investment in unconsolidated affiliates	$ 90,617		$ 90,617

X

- Definition

The amount of change in investment in unconsolidated affiliate.

+ References

No definition available.

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- Definition

The noncash increase (decrease) in unconsolidated affiliate. The noncash change reflects the affect of fluctuations in capital contributions payable during the related period.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section 45
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- Definition

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

+ References

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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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