Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net income	$ 2,222,340	$ 3,822,062	$ 4,634,205	$ 7,429,481
Unrealized (loss) gain from marketable securities, net of tax	(130,324)	178,716	1,112,338	748,779
Comprehensive income	$ 2,092,016	$ 4,000,778	$ 5,746,543	$ 8,178,260