Note 11 - Revenue Recognition - Revenue Attributed to United States and All Other Countries (Details) - USD ($)	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Net sales	$ 19,619,536	$ 17,200,578	$ 37,903,211	$ 31,640,873
UNITED STATES
Net sales	15,829,216	14,792,289	30,407,301	26,936,668
Non-US [Member]
Net sales	$ 3,790,320	$ 2,408,289	$ 7,495,910	$ 4,704,205