Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common stock Voting	Additional Paid In Capital	Accumulated Other Comprehensive Income	Treasury stock	(Accumulated Deficit) Retained Earnings
Beginning balance, common stock (in shares) at Mar. 31, 2022		126,425,383
Beginning balance at Mar. 31, 2022	$ 2,060,395	$ 126	$ 3,023,403	$ 141	$ (1,373,840)	$ 410,565
Beginning balance, treasury stock (in shares) at Mar. 31, 2022					52,323,090
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	59,648					59,648
Unrealized net investment (losses) gains	42			42
Unrealized net gains (losses) on derivative financial instruments	66			66
Cumulative translation adjustments	(270)			(270)
Recognition of actuarial net gains (losses) from pension and other post-retirement plan	5,759			5,759
Issuance of common stock pursuant to vesting of restricted stock units (in shares)		1,777,658
Issuance of common stock pursuant to vesting of restricted stock units	2	$ 2
Stock-based compensation expense for restricted stock units granted to employees	59,086		59,086
Issuance of common stock under employee stock purchase plan (in shares)		480,783
Issuance of common stock under employee stock purchase plan	14,353		14,353
Repurchase of treasury stock	(169,432)		2,856		$ (172,288)
Repurchase of treasury stock (in shares)					5,111,689
Ending balance, common stock (in shares) at Mar. 31, 2023		128,683,824
Ending balance at Mar. 31, 2023	2,029,649	$ 128	3,099,698	5,738	$ (1,546,128)	470,213
Ending balance, treasury stock (in shares) at Mar. 31, 2023					57,434,779
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(147,734)					(147,734)
Unrealized net investment (losses) gains	(45)			(45)
Unrealized net gains (losses) on derivative financial instruments	(71)			(71)
Cumulative translation adjustments	(113)			(113)
Recognition of actuarial net gains (losses) from pension and other post-retirement plan	(1,937)			(1,937)
Issuance of common stock pursuant to vesting of restricted stock units (in shares)		2,067,558
Issuance of common stock pursuant to vesting of restricted stock units	3	$ 3
Stock-based compensation expense for restricted stock units granted to employees	67,973		67,973
Issuance of common stock under employee stock purchase plan (in shares)		564,927
Issuance of common stock under employee stock purchase plan	13,695		13,695
Repurchase of treasury stock	$ (69,355)				$ (69,355)
Repurchase of treasury stock (in shares)					2,477,314
Ending balance, common stock (in shares) at Mar. 31, 2024	71,404,216	131,316,309
Ending balance at Mar. 31, 2024	$ 1,892,065	$ 131	3,181,366	3,572	$ (1,615,483)	322,479
Ending balance, treasury stock (in shares) at Mar. 31, 2024	59,912,093				59,912,093
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (366,922)					(366,922)
Unrealized net investment (losses) gains	27			27
Unrealized net gains (losses) on derivative financial instruments	148			148
Cumulative translation adjustments	(327)			(327)
Recognition of actuarial net gains (losses) from pension and other post-retirement plan	653			653
Issuance of common stock pursuant to vesting of restricted stock units (in shares)		2,205,063
Issuance of common stock pursuant to vesting of restricted stock units	3	$ 3
Stock-based compensation expense for restricted stock units granted to employees	62,558		62,558
Issuance of common stock under employee stock purchase plan (in shares)		516,890
Issuance of common stock under employee stock purchase plan	11,409		11,409
Repurchase of treasury stock	$ (39,219)				$ (39,219)
Repurchase of treasury stock (in shares)					2,065,932
Ending balance, common stock (in shares) at Mar. 31, 2025	72,060,237	134,038,262
Ending balance at Mar. 31, 2025	$ 1,560,395	$ 134	$ 3,255,333	$ 4,073	$ (1,654,702)	$ (44,443)
Ending balance, treasury stock (in shares) at Mar. 31, 2025	61,978,025				61,978,025