STATEMENTS OF INCOME - USD ($)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenue
Product sales	$ 29,218,063	$ 37,196,717
Contract research and development	586,116	1,056,875
Total revenue	29,804,179	38,253,592
Cost of sales	6,772,533	8,062,311
Gross profit	23,031,646	30,191,281
Expenses
Research and development	2,731,434	2,583,994
Selling, general, and administrative	1,771,833	1,963,105
Credit loss expense	9,514	0
Total expenses	4,512,781	4,547,099
Income from operations	18,518,865	25,644,182
Interest income	1,948,720	1,448,655
Income before taxes	20,467,585	27,092,837
Provision for income taxes	3,342,886	4,398,379
Net income	$ 17,124,699	$ 22,694,458
Net income per share - basic	$ 3.54	$ 4.7
Net income per share - diluted	3.54	4.7
Cash dividends declared per common share	$ 4	$ 4
Weighted average shares outstanding
Weighted Average Number of Shares Outstanding, Basic	4,833,146	4,830,826
Weighted Average Number of Shares Outstanding, Diluted	4,839,705	4,832,096