STATEMENTS OF INCOME (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue
Product sales	$ 6,104,433	$ 7,117,122	$ 12,720,292	$ 15,817,214
Contract research and development	654,257	16,154	821,642	147,476
Total revenue	6,758,690	7,133,276	13,541,934	15,964,690
Cost of sales	947,254	1,599,866	1,922,748	3,679,489
Gross profit	5,811,436	5,533,410	11,619,186	12,285,201
Expenses
Research and development	847,603	683,208	1,726,131	1,379,200
Selling, general, and administrative	568,241	433,785	1,108,645	908,900
Accounts Receivable, Credit Loss Expense (Reversal)	0	(202,926)	0	9,514
Total expenses	1,415,844	914,067	2,834,776	2,297,614
Income from operations	4,395,592	4,619,343	8,784,410	9,987,587
Interest income	464,429	512,092	958,388	948,618
Income before taxes	4,860,021	5,131,435	9,742,798	10,936,205
Provision for income taxes	833,876	407,869	1,619,066	1,808,909
Net income	$ 4,026,145	$ 4,723,566	$ 8,123,732	$ 9,127,296
Net income per share - basic	$ 0.83	$ 0.98	$ 1.68	$ 1.89
Net income per share - diluted	0.83	0.98	1.68	1.89
Cash dividends declared per common share	$ 1	$ 1	$ 2	$ 2
Weighted average shares outstanding
Weighted Average Number of Shares Outstanding, Basic	4,833,855	4,833,401	4,833,766	4,832,786
Weighted Average Number of Shares Outstanding, Diluted	4,839,291	4,840,770	4,839,145	4,840,688