Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common stock Voting	Additional Paid In Capital	Accumulated Other Comprehensive Income (Loss)	Treasury stock	Retained Earnings
Beginning balance, common stock (in shares) at Mar. 31, 2021		124,197,974
Beginning balance at Mar. 31, 2021	$ 2,005,779	$ 124	$ 2,955,400	$ (1,940)	$ (1,322,496)	$ 374,691
Beginning balance, treasury stock (in shares) at Mar. 31, 2021					50,446,359
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	35,874					35,874
Unrealized net investment (losses) gains	(29)			(29)
Unrealized net gains (losses) on derivative financial instruments	20			20
Cumulative translation adjustments	153			153
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)		1,728,994
Issuance of common stock pursuant to vesting of restricted stock units	2	$ 2
Stock-based compensation expense for restricted stock units granted to employees	53,421		53,421
Issuance of common stock under employee stock purchase plan (in shares)		498,415
Issuance of common stock under employee stock purchase plan	14,582		14,582
Repurchase of treasury stock	(51,344)				$ (51,344)
Repurchase of treasury stock (in shares)					1,876,731
Ending balance, common stock (in shares) at Mar. 31, 2022		126,425,383
Ending balance at Mar. 31, 2022	2,060,395	$ 126	3,023,403	141	$ (1,373,840)	410,565
Ending 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	71,249,045	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				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