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Note 15 - Foreign Operations - Revenues by Country (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Revenue	$ 19,149,814	$ 9,167,627	$ 50,559,747	$ 24,992,837
UNITED STATES
Revenue	10,121,552	5,745,895	24,403,590	16,374,544
Europe [Member]
Revenue	6,978,833	2,267,780	20,775,704	4,857,768
CHINA
Revenue	1,036,800	711,823	3,210,798	2,036,124
Asia [Member]
Revenue	791,485	260,432	1,478,072	742,950
Other Foreign Countries [Member]
Revenue	$ 221,144	$ 181,697	$ 691,583	$ 981,451

X

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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