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Note 2 - Revenue - Customer Accounts Receivable (Details) - USD ($)		6 Months Ended
		Mar. 31, 2025	Sep. 30, 2024
Trade accounts receivable		$ 13,597,500	$ 4,483,739
Unbilled revenue		3,746,623	1,294,798
Customer credit balances		797,094	1,915,859
Customer deposits		1,586,123	1,488,113
Increase (decrease) in Unbilled revenue	[1]	2,451,825
Increase (decrease) in Customer credit balances		(1,118,765)
Increase (decrease) in Customer deposits		98,010
Trade Accounts Receivable [Member]
Trade accounts receivable		9,788,091	$ 3,080,140
Increase (decrease) in Trade accounts receivable	[1]	$ 6,707,951
[1] Included in "Accounts receivable, net" in the consolidated balance sheet. Amounts shown net of reserve for bad debts.

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Amount of increase (decrease) of liability for consideration received or receivable from customer which is not included in the transaction price, when considered is expected to be refunded to customer.

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