Consolidated Statements of Shareholders Equity - USD ($)	Common stock	Treasury Stock	Additional paid-in capital	Retained Earnings	Total
Balance - beginning at Mar. 31, 2022	$ 513,217	$ (121,226,936)	$ 760,105,994	$ 280,759,140	$ 920,151,415
Balance - beginning (Shares) at Mar. 31, 2022	51,321,695
Increase (Decrease) in Shareholders' Equity
Net Income (Loss)				172,443,930	172,443,930
Restricted share award issuances	$ 3,089		(3,089)
Restricted share award issuances (Shares)	308,898
Dividend ($5.50 per common share)				(221,359,508)	(221,359,508)
Stock-based compensation			4,280,387		4,280,387
Purchase of treasury stock		(1,669,902)			(1,669,902)
Balance - Ending at Mar. 31, 2023	$ 516,306	(122,896,838)	764,383,292	231,843,562	873,846,322
Balance - ending (Shares) at Mar. 31, 2023	51,630,593
Increase (Decrease) in Shareholders' Equity
Net Income (Loss)				307,446,913	307,446,913
Restricted share award issuances	$ 3,644		(3,644)
Restricted share award issuances (Shares)	364,434
Dividend ($4.00 per common share)				(162,154,589)	(162,154,589)
Stock-based compensation			8,334,838		8,334,838
Purchase of treasury stock		(3,940,401)			(3,940,401)
Balance - Ending at Mar. 31, 2024	$ 519,950	(126,837,239)	772,714,486	377,135,886	1,023,533,083
Balance - ending (Shares) at Mar. 31, 2024	51,995,027
Increase (Decrease) in Shareholders' Equity
Net Income (Loss)				90,170,480	90,170,480
Restricted share award issuances	$ 3,294		(3,294)
Restricted share award issuances (Shares)	329,410
Common share issuance	$ 20,000		84,389,361		84,409,361
Common share issuance (Shares)	2,000,000
Dividend ($3.70 per common share)				(156,163,541)	(156,163,541)
Stock-based compensation			10,423,520		10,423,520
Purchase of treasury stock		(6,266,718)			(6,266,718)
Balance - Ending at Mar. 31, 2025	$ 543,244	$ (133,103,957)	$ 867,524,073	$ 311,142,825	$ 1,046,106,185
Balance - ending (Shares) at Mar. 31, 2025	54,324,437