Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($)	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Reconciliation of the beginning and ending amount of unrecognized tax benefits [Roll Forward]
Unrecognized tax benefit balance beginning of year	$ 4,351,811	$ 4,043,623	$ 6,946,229
Gross increases for tax positions of current year	36,541	246,725	54,025
Gross increases (decreases) for tax positions of prior years	0	(786,674)	(138,405)
Settlements with tax authorities	(1,968,702)	0	(1,356,714)
Lapse of statute of limitations	(608,406)	(725,211)	(1,461,512)
Unrecognized tax benefit balance end of year	$ 1,811,244	$ 4,351,811	$ 4,043,623