Leases (Lease Cost) (Details) - USD ($)	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Operating Leases [Abstract]
Finance lease cost	$ 205,975	$ 427,619	$ 466,168
Amortization of right-of-use assets	204,552	407,624	407,624
Interest on lease liabilities	1,423	19,995	58,544
Operating lease cost	27,408,284	27,529,425	27,977,226
Short-term lease cost	0	0	1,800
Variable lease cost	3,710,560	3,629,903	3,621,748
Total lease cost	31,324,819	31,586,947	32,066,942
Cash paid for amounts included in the measurement of lease liabilities	26,476,133	27,936,317	28,211,828
Operating cash flows from finance leases	1,423	19,994	58,544
Operating cash flows from operating leases	26,394,643	27,411,037	27,559,260
Financing cash flows from finance leases	80,067	505,286	594,024
Right-of-use assets obtained in exchange for new finance lease liabilities	0	0	0
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 16,924,511	$ 15,381,953	$ 12,482,167
Weighted-average remaining lease term — finance leases		4 months 24 days	9 months 18 days
Weighted average remaining lease term — operating leases	7 years 1 month 6 days	7 years 3 months 18 days	7 years 3 months 18 days
Weighted-average discount rate (monthly) — finance leases	0.00%	6.00%	6.40%
Weighted-average discount rate — operating leases	6.00%	6.10%	6.30%