Earnings Per Share (Details) - USD ($)	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Income (Numerator)
Income from continuing operations	$ 88,282,828	$ 28,157,478	$ 73,897,515
Shares (Denominator)
Income available to common shareholders (in shares)	6,493,898	7,688,242	8,994,036
Effect of dilutive securities options and restricted stock (in shares)	178,212	264,658	210,341
Income available to common shareholders, diluted (in shares)	6,672,110	7,952,900	9,204,377
Per Share Amount
Income from continuing operations available to common shareholders, Basic (in dollar per share)	$ 13.59	$ 3.66	$ 8.22
Income from continuing operations available to common shareholders, dilutive (in dollar per share)	$ 13.23	$ 3.54	$ 8.03
Antdilutive securities (in shares)	608,087	656,347	592,947