Condensed Consolidated Statements of Stockholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Ending balance, Shares	15,452,656
Beginning balance, value at Feb. 28, 2021	$ 154,527	$ 9,064,994	$ 1,731,161	$ 10,950,682
Beginning balance, Shares at Feb. 28, 2021	15,452,656
Stock based compensation expense		21,637		21,637
Net income			1,266,752	1,266,752
Cashless exercise of stock options	$ 499	(499)
Cashless exercise of stock options, Shares	49,901
Ending balance, value at May. 31, 2021	$ 155,026	9,086,132	2,997,913	12,239,071
Beginning balance, value at Feb. 28, 2021	$ 154,527	9,064,994	1,731,161	10,950,682
Beginning balance, Shares at Feb. 28, 2021	15,452,656
Proceeds from exercise of stock options				8,775
Ending balance, value at Nov. 30, 2021	$ 156,997	9,163,979	3,717,906	13,038,882
Ending balance, Shares	15,502,557
Beginning balance, value at May. 31, 2021	$ 155,026	9,086,132	2,997,913	12,239,071
Beginning balance, Shares at May. 31, 2021	15,502,557
Stock based compensation expense		19,080		19,080
Net income			343,824	343,824
Cashless exercise of stock options	$ 287	(287)
Cashless exercise of stock options, Shares	28,728
Ending balance, value at Aug. 31, 2021	$ 155,313	9,104,925	3,341,737	12,601,975
Ending balance, Shares	15,531,285
Beginning balance, Shares at Aug. 31, 2021	15,531,285
Stock based compensation expense		51,963		51,963
Net income			376,169	376,169
Cashless exercise of stock options	$ 1,609	(1,609)
Cashless exercise of stock options, Shares	160,934
Proceeds from exercise of stock options	$ 75	8,700		8,775
Proceeds from exercise of stock options (shares)	7,500
Ending balance, value at Nov. 30, 2021	$ 156,997	9,163,979	3,717,906	13,038,882
Ending balance, Shares	15,699,719
Ending balance, Shares	15,729,175
Beginning balance, value at Feb. 28, 2022	$ 157,292	9,310,287	4,273,734	13,741,313
Beginning balance, Shares at Feb. 28, 2022	15,729,175
Stock based compensation expense		69,369		69,369
Net income			305,636	305,636
Ending balance, value at May. 31, 2022	$ 157,292	9,379,656	4,579,370	14,116,318
Beginning balance, value at Feb. 28, 2022	$ 157,292	9,310,287	4,273,734	13,741,313
Beginning balance, Shares at Feb. 28, 2022	15,729,175
Proceeds from exercise of stock options
Proceeds from exercise of stock options (shares)				12,898
Ending balance, value at Nov. 30, 2022	$ 157,421	9,483,417	4,846,391	$ 14,487,229
Ending balance, Shares	15,729,175
Beginning balance, value at May. 31, 2022	$ 157,292	9,379,656	4,579,370	14,116,318
Beginning balance, Shares at May. 31, 2022	15,729,175
Stock based compensation expense		43,032		43,032
Net income			162,123	162,123
Cashless exercise of stock options	$ 56	(56)
Cashless exercise of stock options, Shares	5,553
Ending balance, value at Aug. 31, 2022	$ 157,348	9,422,632	4,741,493	14,321,473
Ending balance, Shares	15,734,728
Beginning balance, Shares at Aug. 31, 2022	15,734,728
Stock based compensation expense		60,858		60,858
Net income			104,898	104,898
Cashless exercise of stock options	$ 73	(73)
Cashless exercise of stock options, Shares	7,345
Proceeds from exercise of stock options (shares)				7,345
Ending balance, value at Nov. 30, 2022	$ 157,421	$ 9,483,417	$ 4,846,391	$ 14,487,229
Ending balance, Shares	15,742,073