Note 11 - Segment and Geographic Information - Information by Geographic Location (Details) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2024	May 31, 2023
Net sales	$ 20,686,197	$ 20,969,726	$ 61,710,410	$ 59,193,317
Total Fees	$ 1,212,497	$ 1,361,311	$ 3,764,514	$ 3,795,862
Total Fees percentage	100.00%	100.00%	100.00%	100.00%
Inside the USA to Unaffiliated Customers [Member]
Net sales	$ 7,086,859	$ 7,729,820	$ 21,160,095	$ 21,958,978
POLAND
Total Fees	$ 213,102	$ 224,288	$ 628,905	$ 610,911
Total Fees percentage	17.60%	16.50%	16.70%	16.10%
GERMANY
Total Fees	$ 205,853	$ 209,398	$ 618,236	$ 606,189
Total Fees percentage	17.00%	15.40%	16.40%	16.00%
JAPAN
Total Fees	$ 118,606	$ 152,593	$ 366,682	$ 454,308
Total Fees percentage	9.80%	11.20%	9.70%	12.00%
SWEDEN
Total Fees	$ 110,542	$ 144,981	$ 324,062	$ 358,032
Total Fees percentage	9.10%	10.70%	8.60%	9.40%
FRANCE
Total Fees	$ 47,206	$ 128,149	$ 364,348	$ 356,444
Total Fees percentage	3.90%	9.40%	9.70%	9.40%
Joint Ventures in Which the Company is a Shareholder Directly and Indirectly Outside the USA [Member]
Net sales	$ 441,067	$ 732,437	$ 1,904,444	$ 2,895,665
CZECHIA
Total Fees	$ 101,111	$ 99,089	$ 263,712	$ 270,422
Total Fees percentage	8.30%	7.30%	7.00%	7.10%
FINLAND
Total Fees	$ 97,437	$ 103,879	$ 296,929	$ 285,931
Total Fees percentage	8.00%	7.60%	7.90%	7.50%
UNITED KINGDOM
Total Fees	$ 96,872	$ 83,586	$ 215,123	$ 206,925
Total Fees percentage	8.00%	6.10%	5.70%	5.50%
Unaffiliated Customers Outside the USA [Member]
Net sales	$ 13,158,272	$ 12,507,469	$ 38,645,871	$ 34,338,674
THAILAND
Total Fees	$ 77,206	$ 82,725	$ 246,908	$ 257,282
Total Fees percentage	6.40%	6.10%	6.60%	6.80%
KOREA, REPUBLIC OF
Total Fees	$ 58,732	$ 61,668	$ 197,070	$ 190,866
Total Fees percentage	4.80%	4.50%	5.20%	5.00%
Other Countries [Member]
Net sales	$ 2,735,259	$ 3,287,600	$ 9,108,583	$ 8,878,105
Total Fees	$ 85,830	$ 70,953	$ 242,540	$ 198,552
Total Fees percentage	7.10%	5.20%	6.40%	5.20%