Note 12 - Segment and Geographic Information - Information by Geographic Location (Details) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2025	May 31, 2024	May 31, 2025	May 31, 2024
Net sales	$ 21,508,563	$ 20,686,197	$ 61,919,022	$ 61,710,410
Total Fees	$ 1,302,598	$ 1,212,497	$ 3,656,980	$ 3,764,514
Total Fees percentage	100.00%	100.00%	100.00%	100.00%
Inside the USA to Unaffiliated Customers [Member]
Net sales	$ 7,341,392	$ 7,086,859	$ 21,492,193	$ 21,160,095
POLAND
Total Fees	$ 232,064	$ 213,102	$ 637,574	$ 628,905
Total Fees percentage	17.80%	17.60%	17.40%	16.70%
GERMANY
Total Fees	$ 218,943	$ 205,853	$ 626,999	$ 618,236
Total Fees percentage	16.80%	17.00%	17.10%	16.40%
JAPAN
Total Fees	$ 158,434	$ 118,606	$ 429,520	$ 366,682
Total Fees percentage	12.20%	9.80%	11.70%	9.70%
Joint Ventures in Which the Company is a Shareholder Directly and Indirectly Outside the USA [Member]
Net sales	$ 630,653	$ 441,067	$ 1,802,906	$ 1,904,444
SWEDEN
Total Fees	$ 111,138	$ 110,542	$ 295,873	$ 324,062
Total Fees percentage	8.50%	9.10%	8.10%	8.60%
FRANCE
Total Fees	$ 76,459	$ 47,206	$ 312,520	$ 364,348
Total Fees percentage	5.90%	3.90%	8.50%	9.70%
CZECHIA
Total Fees	$ 110,844	$ 101,111	$ 251,018	$ 263,712
Total Fees percentage	8.50%	8.30%	6.90%	7.00%
FINLAND
Total Fees	$ 95,142	$ 97,437	$ 276,028	$ 296,929
Total Fees percentage	7.30%	8.00%	7.50%	7.90%
Unaffiliated Customers Outside the USA [Member]
Net sales	$ 13,536,518	$ 13,158,271	$ 38,623,923	$ 38,645,871
UNITED KINGDOM
Total Fees	$ 93,108	$ 96,872	$ 237,734	$ 215,123
Total Fees percentage	7.10%	8.00%	6.50%	5.70%
THAILAND
Total Fees	$ 87,957	$ 77,206	$ 242,212	$ 246,908
Total Fees percentage	6.80%	6.40%	6.60%	6.60%
KOREA, REPUBLIC OF
Total Fees	$ 83,697	$ 58,732	$ 217,668	$ 197,070
Total Fees percentage	6.40%	4.80%	6.00%	5.20%
Other Countries [Member]
Net sales	$ 2,453,869	$ 2,735,259	$ 7,166,981	$ 9,108,582
Total Fees	$ 34,812	$ 85,830	$ 129,834	$ 242,539
Total Fees percentage	2.70%	7.10%	3.70%	6.50%