Benefit Plans (Stock-based compensation) (Details) - USD ($)	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 19,281,278	$ 28,952,161	$ 17,635,309
Stock Options Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	3,804,674	5,522,883	3,991,967
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	15,476,603	23,429,277	13,643,343
Equity Classified Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 19,281,277	$ 28,952,160	$ 17,635,310