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)		143,103
Proceeds from exercise of stock options	11,715,720		11,715,720
Common stock repurchases (in shares)		(289,158)
Common stock repurchases	(50,460,129)			(50,460,129)
Restricted common stock expense under stock option plan, net of cancellations (in shares)		(22,146)
Restricted common stock expense under stock option plan, net of cancellations	5,168,510		5,168,510
Stock option expense	2,517,071		2,517,071
Net income (loss)	35,537,652			35,537,652
Ending balance (in shares) at Dec. 31, 2021		6,637,093
Ending balances at Dec. 31, 2021	409,406,265		274,991,975	134,414,290
Beginning balance (in shares) at Sep. 30, 2021		6,724,140
Beginning balances at Sep. 30, 2021	419,007,341		272,572,177	146,435,164
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Proceeds from exercise of stock options (in shares)		31,981
Proceeds from exercise of stock options	3,033,142		3,033,142
Common stock repurchases (in shares)		(93,722)
Common stock repurchases	(19,347,606)			(19,347,606)
Restricted common stock expense under stock option plan, net of cancellations (in shares)		(25,306)
Restricted common stock expense under stock option plan, net of cancellations	(1,277,438)		(1,277,438)
Stock option expense	664,094		664,094
Net income (loss)	7,326,732			7,326,732
Ending balance (in shares) at Dec. 31, 2021		6,637,093
Ending balances at Dec. 31, 2021	$ 409,406,265		274,991,975	134,414,290
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)		5,596
Proceeds from exercise of stock options	486,372		486,372
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)		(51,658)
Restricted common stock expense under stock option plan, net of cancellations	2,969,433		2,969,433
Stock option expense	1,869,879		1,869,879
Net income (loss)	$ (4,409,883)			(4,409,883)
Ending balance (in shares) at Dec. 31, 2022	6,228,609	6,228,609
Ending balances at Dec. 31, 2022	$ 359,626,141		286,232,769	73,393,372
Beginning balance (in shares) at Sep. 30, 2022		6,281,721
Beginning balances at Sep. 30, 2022	356,581,666		288,947,268	67,634,398
Increase (Decrease) in Shareholders' Equity [Roll Forward]
Proceeds from exercise of stock options (in shares)		1,296
Proceeds from exercise of stock options	82,825		82,825
Common stock repurchases	0
Restricted common stock expense under stock option plan, net of cancellations (in shares)		(54,408)
Restricted common stock expense under stock option plan, net of cancellations	(3,222,444)		(3,222,444)
Stock option expense	425,120		425,120
Net income (loss)	$ 5,758,974			5,758,974
Ending balance (in shares) at Dec. 31, 2022	6,228,609	6,228,609
Ending balances at Dec. 31, 2022	$ 359,626,141		$ 286,232,769	$ 73,393,372