Note 18 - Commitments and Contingencies (Details Textual) - Aquana, LLC [Member] - USD ($)	1 Months Ended
	Jul. 31, 2021	Sep. 30, 2024	Sep. 30, 2023
Business Combination, Contingent Consideration, Earn Out Period (Year)	6 years
Business Combination, Required Continued Employment of Key Employees, Period (Year)	4 years
Business Combination, Contingent Consideration, Liability		$ 17,000	$ 0