CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balances at May. 31, 2021	$ 984,571	$ 38,836,743	$ (47,956)	$ (30,546,335)	$ 9,227,023
Balances (in Shares) at May. 31, 2021	12,307,157
Exercise of stock options	$ 120	3,775			3,895
Exercise of stock options (in Shares)	1,500
Net proceeds from ATM	$ 16,124	784,586			800,710
Net proceeds from ATM (in Shares)	201,553
Foreign currency translation			(5,613)		(5,613)
Stock option expense		319,622			319,622
Net loss				(1,542,581)	(1,542,581)
Balances, August 31, 2022 at Aug. 31, 2021	$ 1,000,815	39,944,726	(53,569)	(32,088,916)	8,803,056
Balances, August 31, 2022 (in Shares) at Aug. 31, 2021	12,510,210
Balances at May. 31, 2021	$ 984,571	38,836,743	(47,956)	(30,546,335)	9,227,023
Balances (in Shares) at May. 31, 2021	12,307,157
Foreign currency translation					(10,363)
Net loss					(2,667,855)
Balances, August 31, 2022 at Nov. 30, 2021	$ 1,015,385	41,158,551	(58,319)	(33,214,190)	8,901,427
Balances, August 31, 2022 (in Shares) at Nov. 30, 2021	12,692,327
Balances at Aug. 31, 2021	$ 1,000,815	39,944,726	(53,569)	(32,088,916)	8,803,056
Balances (in Shares) at Aug. 31, 2021	12,510,210
Exercise of stock options	$ 1,600	28,985			30,585
Exercise of stock options (in Shares)	20,000
Net proceeds from ATM	$ 12,970	870,443			883,413
Net proceeds from ATM (in Shares)	162,117
Foreign currency translation			(4,750)		(4,750)
Stock option expense		314,397			314,397
Net loss				(1,125,274)	(1,125,274)
Balances, August 31, 2022 at Nov. 30, 2021	$ 1,015,385	41,158,551	(58,319)	(33,214,190)	8,901,427
Balances, August 31, 2022 (in Shares) at Nov. 30, 2021	12,692,327
Balances at May. 31, 2022	$ 1,029,432	42,446,597	(73,936)	(35,077,379)	8,324,714
Balances (in Shares) at May. 31, 2022	12,867,924
Exercise of stock options	$ 1,200	12,750			13,950
Exercise of stock options (in Shares)	15,000
Net proceeds from ATM	$ 41,918	1,721,650			1,763,568
Net proceeds from ATM (in Shares)	523,977
Foreign currency translation			(12,527)		(12,527)
Stock option expense		303,755			303,755
Net loss				(2,071,876)	(2,071,876)
Balances, August 31, 2022 at Aug. 31, 2022	$ 1,072,550	44,484,752	(86,463)	(37,149,255)	8,321,584
Balances, August 31, 2022 (in Shares) at Aug. 31, 2022	13,406,901
Balances at May. 31, 2022	$ 1,029,432	42,446,597	(73,936)	(35,077,379)	$ 8,324,714
Balances (in Shares) at May. 31, 2022	12,867,924
Exercise of stock options (in Shares)					46,500
Foreign currency translation					$ (21,477)
Net loss					(3,697,964)
Balances, August 31, 2022 at Nov. 30, 2022	$ 1,078,353	45,035,298	(95,413)	(38,775,343)	7,242,895
Balances, August 31, 2022 (in Shares) at Nov. 30, 2022	13,479,413
Balances at Aug. 31, 2022	$ 1,072,550	44,484,752	(86,463)	(37,149,255)	8,321,584
Balances (in Shares) at Aug. 31, 2022	13,406,901
Exercise of stock options	$ 2,520	62,685			65,205
Exercise of stock options (in Shares)	31,500
Net proceeds from ATM	$ 3,283	169,631			172,914
Net proceeds from ATM (in Shares)	41,012
Foreign currency translation			(8,950)		(8,950)
Stock option expense		318,230			318,230
Net loss				(1,626,088)	(1,626,088)
Balances, August 31, 2022 at Nov. 30, 2022	$ 1,078,353	$ 45,035,298	$ (95,413)	$ (38,775,343)	$ 7,242,895
Balances, August 31, 2022 (in Shares) at Nov. 30, 2022	13,479,413