STATEMENTS OF INCOME (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Revenue
Product sales	$ 7,200,385	$ 5,916,790	$ 24,787,885	$ 19,500,567
Contract research and development	201,293	374,019	668,024	766,866
Total revenue	7,401,678	6,290,809	25,455,909	20,267,433
Cost of sales	1,478,372	1,385,006	5,533,000	4,698,720
Gross profit	5,923,306	4,905,803	19,922,909	15,568,713
Expenses
Research and development	700,609	596,492	1,972,505	2,112,630
Selling, general, and administrative	403,449	272,159	1,210,395	1,221,893
Total expenses	1,104,058	868,651	3,182,900	3,334,523
Income from operations	4,819,248	4,037,152	16,740,009	12,234,190
Interest income	406,092	283,940	1,040,528	868,519
Income before taxes	5,225,340	4,321,092	17,780,537	13,102,709
Provision for income taxes	994,016	855,685	3,318,723	2,411,228
Net income	$ 4,231,324	$ 3,465,407	$ 14,461,814	$ 10,691,481
Net income per share - basic	$ 0.88	$ 0.72	$ 2.99	$ 2.21
Net income per share - diluted	0.88	0.72	2.99	2.21
Cash dividends declared per common share	$ 1.00	$ 1.00	$ 3.00	$ 3.00
Weighted average shares outstanding
Weighted Average Number of Shares Outstanding, Basic	4,830,826	4,833,604	4,830,826	4,833,356
Weighted Average Number of Shares Outstanding, Diluted	4,832,368	4,835,770	4,831,168	4,835,781