CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings
Beginning balance (in shares) at Mar. 31, 2021		6,805,294
Beginning balances at Mar. 31, 2021	$ 404,927,441		$ 255,590,674	$ 149,336,767
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Proceeds from exercise of stock options (in shares)		111,122
Proceeds from exercise of stock options	8,682,578		8,682,578
Common stock repurchases (in shares)		(195,436)
Common stock repurchases	(31,112,523)			(31,112,523)
Restricted common stock expense under stock option plan, net of cancellations (in shares)		3,160
Restricted common stock expense under stock option plan, net of cancellations	6,445,948		6,445,948
Stock option expense	1,852,977		1,852,977
Net (loss) income	28,210,920			28,210,920
Ending balance (in shares) at Sep. 30, 2021		6,724,140
Ending balances at Sep. 30, 2021	419,007,341		272,572,177	146,435,164
Beginning balance (in shares) at Jun. 30, 2021		6,693,703
Beginning balances at Jun. 30, 2021	405,470,862		261,446,129	144,024,733
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Proceeds from exercise of stock options (in shares)		87,628
Proceeds from exercise of stock options	6,873,724		6,873,724
Common stock repurchases (in shares)		(61,187)
Common stock repurchases	(10,029,661)			(10,029,661)
Restricted common stock expense under stock option plan, net of cancellations (in shares)		3,996
Restricted common stock expense under stock option plan, net of cancellations	3,342,974		3,342,974
Stock option expense	909,350		909,350
Net (loss) income	12,440,092			12,440,092
Ending balance (in shares) at Sep. 30, 2021		6,724,140
Ending balances at Sep. 30, 2021	$ 419,007,341		272,572,177	146,435,164
Beginning balance (in shares) at Mar. 31, 2022	6,348,314	6,348,314
Beginning balances at Mar. 31, 2022	$ 373,024,428		280,907,085	92,117,343
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Proceeds from exercise of stock options (in shares)		4,300
Proceeds from exercise of stock options	403,547		403,547
Common stock repurchases (in shares)		(73,643)
Common stock repurchases	(14,314,088)			(14,314,088)
Restricted common stock expense under stock option plan, net of cancellations (in shares)		2,750
Restricted common stock expense under stock option plan, net of cancellations	6,191,877		6,191,877
Stock option expense	1,444,759		1,444,759
Net (loss) income	$ (10,168,857)			(10,168,857)
Ending balance (in shares) at Sep. 30, 2022	6,281,721	6,281,721
Ending balances at Sep. 30, 2022	$ 356,581,666		288,947,268	67,634,398
Beginning balance (in shares) at Jun. 30, 2022		6,280,721
Beginning balances at Jun. 30, 2022	354,127,052		285,126,690	69,000,362
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Restricted common stock expense under stock option plan, net of cancellations (in shares)		1,000
Restricted common stock expense under stock option plan, net of cancellations	3,143,874		3,143,874
Stock option expense	676,704		676,704
Net (loss) income	$ (1,365,964)			(1,365,964)
Ending balance (in shares) at Sep. 30, 2022	6,281,721	6,281,721
Ending balances at Sep. 30, 2022	$ 356,581,666		$ 288,947,268	$ 67,634,398