STATEMENTS OF INCOME - USD ($)	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue
Product sales	$ 37,196,717	$ 25,867,649
Contract research and development	1,056,875	1,119,321
Total revenue	38,253,592	26,986,970
Cost of sales	8,062,311	6,263,090
Gross profit	30,191,281	20,723,880
Expenses
Research and development	2,583,994	2,925,874
Selling, general, and administrative	1,963,105	1,469,321
Total expenses	4,547,099	4,395,195
Income from operations	25,644,182	16,328,685
Interest income	1,448,655	1,171,128
Income before taxes	27,092,837	17,499,813
Provision for income taxes	4,398,379	2,992,312
Net income	$ 22,694,458	$ 14,507,501
Net income per share - basic	$ 4.70	$ 3.00
Net income per share - diluted	4.70	3.00
Cash dividends declared per common share	$ 4.00	$ 4.00
Weighted average shares outstanding
Weighted Average Number of Shares Outstanding, Basic	4,830,826	4,833,661
Weighted Average Number of Shares Outstanding, Diluted	4,832,096	4,835,639