CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 88,282,828	$ 28,157,478	$ 37,235,134
Foreign currency translation adjustments	0	0	(5,235,838)
Reclassification of cumulative foreign currency translation adjustments due to sale of Mexico business	0	0	31,290,918
Comprehensive income	$ 88,282,828	$ 28,157,478	$ 63,290,214