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, 2023		128,683,824
Beginning balance at Mar. 31, 2023	$ 2,029,649	$ 128	$ 3,099,698	$ 5,738	$ (1,546,128)	$ 470,213
Beginning balance, treasury stock (in shares) at Mar. 31, 2023					57,434,779
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(115,315)					(115,315)
Unrealized net investment (losses) gains	(40)			(40)
Unrealized net (losses) gains on derivative financial instruments	26			26
Cumulative translation adjustments	146			146
Issuance of common stock pursuant to vesting of restricted stock units (in shares)		2,028,862
Issuance of common stock pursuant to vesting of restricted stock units	3	$ 3
Stock-based compensation expense for restricted stock units granted to employees	52,579		52,579
Issuance of common stock under employee stock purchase plan (in shares)		209,791
Issuance of common stock under employee stock purchase plan	6,006		6,006
Repurchase of treasury stock (in shares)					2,467,794
Repurchase of treasury stock	(69,151)				$ (69,151)
Ending balance, common stock (in shares) at Dec. 31, 2023		130,922,477
Ending balance at Dec. 31, 2023	1,903,903	$ 131	3,158,283	5,870	$ (1,615,279)	354,898
Ending balance, treasury stock (in shares) at Dec. 31, 2023					59,902,573
Beginning balance, common stock (in shares) at Sep. 30, 2023		130,875,398
Beginning balance at Sep. 30, 2023	2,039,670	$ 130	3,142,712	5,379	$ (1,596,026)	487,475
Beginning balance, treasury stock (in shares) at Sep. 30, 2023					59,177,497
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(132,577)					(132,577)
Unrealized net investment (losses) gains	57			57
Unrealized net (losses) gains on derivative financial instruments	218			218
Cumulative translation adjustments	216			216
Issuance of common stock pursuant to vesting of restricted stock units (in shares)		47,079
Issuance of common stock pursuant to vesting of restricted stock units	1	$ 1
Stock-based compensation expense for restricted stock units granted to employees	15,571		15,571
Repurchase of treasury stock (in shares)					725,076
Repurchase of treasury stock	(19,253)				$ (19,253)
Ending balance, common stock (in shares) at Dec. 31, 2023		130,922,477
Ending balance at Dec. 31, 2023	1,903,903	$ 131	3,158,283	5,870	$ (1,615,279)	354,898
Ending balance, treasury stock (in shares) at Dec. 31, 2023					59,902,573
Beginning balance, common stock (in shares) at Sep. 30, 2023		130,875,398
Beginning balance at Sep. 30, 2023	$ 2,039,670	$ 130	3,142,712	5,379	$ (1,596,026)	487,475
Beginning balance, treasury stock (in shares) at Sep. 30, 2023					59,177,497
Ending balance, common stock (in shares) at Dec. 31, 2024	71,745,945	133,718,142
Ending balance at Dec. 31, 2024	$ 1,520,583	$ 133	3,234,959	3,120	$ (1,654,569)	(63,060)
Ending balance, treasury stock (in shares) at Dec. 31, 2024	61,972,197				61,972,197
Beginning balance, common stock (in shares) at Mar. 31, 2024	71,404,216	131,316,309
Beginning balance at Mar. 31, 2024	$ 1,892,065	$ 131	3,181,366	3,572	$ (1,615,483)	322,479
Beginning 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)	$ (385,539)					(385,539)
Unrealized net investment (losses) gains	26			26
Unrealized net (losses) gains on derivative financial instruments	(197)			(197)
Cumulative translation adjustments	(281)			(281)
Issuance of common stock pursuant to vesting of restricted stock units (in shares)		2,188,735
Issuance of common stock pursuant to vesting of restricted stock units	2	$ 2
Stock-based compensation expense for restricted stock units granted to employees	49,016		49,016
Issuance of common stock under employee stock purchase plan (in shares)		213,098
Issuance of common stock under employee stock purchase plan	4,577		4,577
Repurchase of treasury stock (in shares)					2,060,104
Repurchase of treasury stock	$ (39,086)				$ (39,086)
Ending balance, common stock (in shares) at Dec. 31, 2024	71,745,945	133,718,142
Ending balance at Dec. 31, 2024	$ 1,520,583	$ 133	3,234,959	3,120	$ (1,654,569)	(63,060)
Ending balance, treasury stock (in shares) at Dec. 31, 2024	61,972,197				61,972,197
Beginning balance, common stock (in shares) at Sep. 30, 2024		133,671,490
Beginning balance at Sep. 30, 2024	$ 1,459,388	$ 133	3,221,213	4,151	$ (1,654,239)	(111,870)
Beginning balance, treasury stock (in shares) at Sep. 30, 2024					61,956,261
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	48,810					48,810
Unrealized net investment (losses) gains	(2)			(2)
Unrealized net (losses) gains on derivative financial instruments	(351)			(351)
Cumulative translation adjustments	(678)			(678)
Issuance of common stock pursuant to vesting of restricted stock units (in shares)		46,652
Stock-based compensation expense for restricted stock units granted to employees	13,746		13,746
Repurchase of treasury stock (in shares)					15,936
Repurchase of treasury stock	$ (330)				$ (330)
Ending balance, common stock (in shares) at Dec. 31, 2024	71,745,945	133,718,142
Ending balance at Dec. 31, 2024	$ 1,520,583	$ 133	$ 3,234,959	$ 3,120	$ (1,654,569)	$ (63,060)
Ending balance, treasury stock (in shares) at Dec. 31, 2024	61,972,197				61,972,197