STATEMENTS OF INCOME (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Revenue
Product sales	$ 6,615,859	$ 8,700,092
Contract research and development	167,385	131,322
Total revenue	6,783,244	8,831,414
Cost of sales	975,494	2,079,623
Gross profit	5,807,750	6,751,791
Expenses
Research and development	878,528	695,992
Selling, general, and administrative	540,404	475,115
Credit loss expense	0	212,440
Total expenses	1,418,932	1,383,547
Income from operations	4,388,818	5,368,244
Interest income	493,959	436,526
Income before taxes	4,882,777	5,804,770
Provision for income taxes	785,190	1,401,040
Net income	$ 4,097,587	$ 4,403,730
Net income per share - basic	$ 0.85	$ 0.91
Net income per share - diluted	0.85	0.91
Cash dividends declared per common share	$ 1	$ 1
Weighted average shares outstanding
Weighted Average Number of Shares Outstanding, Basic	4,833,676	4,832,166
Weighted Average Number of Shares Outstanding, Diluted	4,838,995	4,840,571