Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss)
Beginning Balance at Mar. 31, 2021	$ 1,329,675	$ 453	$ (288,030)	$ 800,690	$ 828,007	$ (11,445)
Beginning Balance (in shares) at Mar. 31, 2021		45,270,948	2,658,454
Restricted stock units issued		$ 1		(1)
Restricted stock units issued (in shares)		85,284
Stock options exercised	2,120	$ 1		2,119
Stock options exercised (in shares)		55,757
Return of common stock to pay withholding taxes on restricted stock	(9,590)	$ (1)	$ (9,589)
Return of common stock to pay withholding taxes on restricted stock (in shares)		(34,274)	34,274
Stock-based compensation expense	12,608			12,608
Other comprehensive loss	(766)					(766)
Net income (loss)	(26,525)				(26,525)
Ending Balance at Jun. 30, 2021	1,307,522	$ 454	$ (297,619)	815,416	801,482	(12,211)
Ending Balance (in shares) at Jun. 30, 2021		45,377,715	2,692,728
Beginning Balance at Mar. 31, 2021	1,329,675	$ 453	$ (288,030)	800,690	828,007	(11,445)
Beginning Balance (in shares) at Mar. 31, 2021		45,270,948	2,658,454
Stock repurchase program	$ 0
Stock repurchase program, (in shares)	0
Other comprehensive loss	$ (3,111)
Net income (loss)	30,428
Ending Balance at Sep. 30, 2021	1,384,563	$ 455	$ (300,158)	840,387	858,435	(14,556)
Ending Balance (in shares) at Sep. 30, 2021		45,496,563	2,700,481
Beginning Balance at Jun. 30, 2021	1,307,522	$ 454	$ (297,619)	815,416	801,482	(12,211)
Beginning Balance (in shares) at Jun. 30, 2021		45,377,715	2,692,728
Restricted stock units issued (in shares)		19,638
Stock options exercised	6,262	$ 1		6,261
Stock options exercised (in shares)		95,916
Return of common stock to pay withholding taxes on restricted stock	(2,539)		$ (2,539)
Return of common stock to pay withholding taxes on restricted stock (in shares)		(7,753)	7,753
Stock issued under employee stock purchase plan	2,961			2,961
Stock issued under employee stock purchase plan (in shares)		11,047
Stock-based compensation expense	15,749			15,749
Stock repurchase program	$ 0
Stock repurchase program, (in shares)	0
Other comprehensive loss	$ (2,345)					(2,345)
Net income (loss)	56,953				56,953
Ending Balance at Sep. 30, 2021	1,384,563	$ 455	$ (300,158)	840,387	858,435	(14,556)
Ending Balance (in shares) at Sep. 30, 2021		45,496,563	2,700,481
Beginning Balance at Mar. 31, 2022	$ 1,503,326	$ 455	$ (304,555)	870,074	964,512	(27,160)
Beginning Balance (in shares) at Mar. 31, 2022	45,545,000	45,545,438	2,713,125
Restricted stock units issued	$ 1	$ 2		(1)
Restricted stock units issued (in shares)		105,701
Stock options exercised	1,531	$ 1		1,530
Stock options exercised (in shares)		18,136
Return of common stock to pay withholding taxes on restricted stock	(10,950)	$ (1)	$ (10,949)
Return of common stock to pay withholding taxes on restricted stock (in shares)		(42,046)	42,046
Stock-based compensation expense	13,362			13,362
Stock repurchase program	(14,517)	$ (1)	$ (14,516)
Stock repurchase program, (in shares)		60,282	(60,282)
Other comprehensive loss	(11,111)					(11,111)
Net income (loss)	54,554				54,554
Ending Balance at Jun. 30, 2022	1,536,196	$ 456	$ (330,020)	884,965	1,019,066	(38,271)
Ending Balance (in shares) at Jun. 30, 2022		45,566,947	2,815,453
Beginning Balance at Mar. 31, 2022	$ 1,503,326	$ 455	$ (304,555)	870,074	964,512	(27,160)
Beginning Balance (in shares) at Mar. 31, 2022	45,545,000	45,545,438	2,713,125
Stock options exercised (in shares)	21,000
Stock repurchase program	$ (126,600)
Stock repurchase program, (in shares)	(484,734)
Other comprehensive loss	$ (19,485)
Net income (loss)	160,687
Ending Balance at Sep. 30, 2022	$ 1,539,787	$ 452	$ (443,974)	904,755	1,125,199	(46,645)
Ending Balance (in shares) at Sep. 30, 2022	45,172,000	45,172,150	3,246,237
Beginning Balance at Jun. 30, 2022	$ 1,536,196	$ 456	$ (330,020)	884,965	1,019,066	(38,271)
Beginning Balance (in shares) at Jun. 30, 2022		45,566,947	2,815,453
Restricted stock units issued (in shares)		16,809
Stock options exercised	468			468
Stock options exercised (in shares)		3,337
Return of common stock to pay withholding taxes on restricted stock	(1,852)		$ (1,852)
Return of common stock to pay withholding taxes on restricted stock (in shares)		(6,332)	6,332
Stock issued under employee stock purchase plan	3,308			3,308
Stock issued under employee stock purchase plan (in shares)		15,841
Stock-based compensation expense	16,014			16,014
Stock repurchase program	$ (112,106)	$ (4)	$ (112,102)
Stock repurchase program, (in shares)	(424,452)	424,452	(424,452)
Other comprehensive loss	$ (8,374)					(8,374)
Net income (loss)	106,133				106,133
Ending Balance at Sep. 30, 2022	$ 1,539,787	$ 452	$ (443,974)	$ 904,755	$ 1,125,199	$ (46,645)
Ending Balance (in shares) at Sep. 30, 2022	45,172,000	45,172,150	3,246,237