STATEMENTS OF INCOME (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Revenue
Product sales	$ 5,908,570	$ 6,615,859
Contract research and development	196,074	167,385
Total revenue, net	6,104,644	6,783,244
Cost of sales	1,182,523	975,494
Gross profit	4,922,121	5,807,750
Expenses
Research and development	720,231	878,528
Selling, general, and administrative	418,640	540,404
Total expenses	1,138,871	1,418,932
Income from operations	3,783,250	4,388,818
Interest income	498,208	493,959
Other income	811	0
Income before taxes	4,282,269	4,882,777
Provision for income taxes	706,451	785,190
Net income	$ 3,575,818	$ 4,097,587
Net income per share - basic	$ 0.74	$ 0.85
Net income per share - diluted	0.74	0.85
Cash dividends declared per common share	$ 1	$ 1
Weighted average shares outstanding
Weighted Average Number of Shares Outstanding, Basic	4,837,166	4,833,676
Weighted Average Number of Shares Outstanding, Diluted	4,838,877	4,838,995