Consolidated Statements of Stockholders' Equity - (Unaudited) - USD ($)	Total	Common Stock [Member]	Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]
Beginning balance at Mar. 31, 2023	$ 202,176,000	$ 3,000	$ 218,700,000	$ (748,195,000)	$ 731,668,000
Beginning balance, shares at Mar. 31, 2023		164,962,098		(113,453,598)
Stock issued under employee stock purchase plan	336,000	$ 0	336,000	$ 0	0
Stock issued under employee stock purchase plan, shares		5,391		0
Stock issued under stock option plan, net of shares repurchased	7,059,000	$ 0	7,059,000	$ 0	0
Stock issued under stock option plan, net of shares repurchased, shares		316,515		0
Stock-based compensation expense	3,690,000	$ 0	3,690,000	$ 0	0
Purchase of treasury stock	(36,529,000)		0	$ (36,529,000)	0
Purchase of treasury stock, shares		0		(532,452)
Net Income (Loss)	56,798,000	$ 0	0	$ 0	56,798,000
Ending balance at Dec. 31, 2023	233,530,000	$ 3,000	229,785,000	$ (784,724,000)	788,466,000
Ending balance, shares at Dec. 31, 2023		165,284,004		(113,986,050)
Beginning balance at Sep. 30, 2023	222,569,000	$ 3,000	226,595,000	$ (775,400,000)	771,371,000
Beginning balance, shares at Sep. 30, 2023		165,212,526		(113,854,077)
Stock issued under stock option plan, net of shares repurchased	2,114,000	$ 0	2,114,000	$ 0	0
Stock issued under stock option plan, net of shares repurchased, shares		71,478		0
Stock-based compensation expense	1,076,000	$ 0	1,076,000	$ 0	0
Purchase of treasury stock	(9,324,000)		0	$ (9,324,000)	0
Purchase of treasury stock, shares		0		(131,973)
Net Income (Loss)	17,095,000	$ 0	0	$ 0	17,095,000
Ending balance at Dec. 31, 2023	233,530,000	$ 3,000	229,785,000	$ (784,724,000)	788,466,000
Ending balance, shares at Dec. 31, 2023		165,284,004		(113,986,050)
Beginning balance at Mar. 31, 2024	247,647,000	$ 3,000	233,629,000	$ (793,905,000)	807,920,000
Beginning balance, shares at Mar. 31, 2024		165,486,225		(114,099,537)
Stock issued under employee stock purchase plan	342,000	$ 0	342,000	$ 0	0
Stock issued under employee stock purchase plan, shares		3,306		0
Stock issued under stock option plan, net of shares repurchased	8,348,000	$ 0	8,348,000	$ 0	0
Stock issued under stock option plan, net of shares repurchased, shares		273,672		0
Stock-based compensation expense	4,376,000	$ 0	4,376,000	$ 0	0
Purchase of treasury stock	$ (28,609,000)		0	$ (28,609,000)	0
Purchase of treasury stock, shares	(296,493)	0		(296,493)
Adjusted shares outstanding, value	$ 0	$ 2,000	(2,000)	$ 0	0
Adjusted shares outstanding, shares		0		0
Net Income (Loss)	68,746,000	$ 0	0	$ 0	68,746,000
Ending balance at Dec. 31, 2024	300,850,000	$ 5,000	246,693,000	$ (822,514,000)	876,666,000
Ending balance, shares at Dec. 31, 2024		165,763,203		(114,396,030)
Beginning balance at Sep. 30, 2024	282,772,000	$ 3,000	242,894,000	$ (813,020,000)	852,895,000
Beginning balance, shares at Sep. 30, 2024		165,715,800		(114,310,320)
Stock issued under stock option plan, net of shares repurchased	1,978,000	$ 0	1,978,000	$ 0	0
Stock issued under stock option plan, net of shares repurchased, shares		47,403		0
Stock-based compensation expense	1,823,000	$ 0	1,823,000	$ 0	0
Purchase of treasury stock	$ (9,494,000)	$ (9,500,000)		$ (9,494,000)	0
Purchase of treasury stock, shares	(85,710)	0		(85,710)
Adjusted shares outstanding, value	$ 0	$ 2,000	(2,000)	$ 0	0
Adjusted shares outstanding, shares		0		0
Net Income (Loss)	23,771,000	$ 0	0	$ 0	23,771,000
Ending balance at Dec. 31, 2024	$ 300,850,000	$ 5,000	$ 246,693,000	$ (822,514,000)	$ 876,666,000
Ending balance, shares at Dec. 31, 2024		165,763,203		(114,396,030)