Statements of Income (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Revenue
Product sales	$ 6,882,673	$ 5,851,214
Contract research and development	724,993	856,558
Total revenue	7,607,666	6,707,772
Cost of sales	1,798,366	1,385,178
Gross profit	5,809,300	5,322,594
Expenses
Selling, general, and administrative	399,361	389,915
Research and development	905,725	758,368
Total expenses	1,305,086	1,148,283
Income from operations	4,504,214	4,174,311
Interest income	361,778	437,734
Income before taxes	4,865,992	4,612,045
Provision for income taxes	1,568,377	1,479,500
Net income	$ 3,297,615	$ 3,132,545
Net income per share – basic (in dollars per share)	$ 0.68	$ 0.65
Net income per share – diluted (in dollars per share)	0.68	0.65
Cash dividends declared per common share (in dollars per share)	$ 1	$ 1
Weighted average shares outstanding
Basic (in shares)	4,841,010	4,835,010
Diluted (in shares)	4,846,251	4,837,095