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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock Voting | Additional Paid In Capital | Accumulated Other Comprehensive Income | Treasury Stock | Retained Earnings (Accumulated Deficit)
--- | --- | --- | --- | --- | --- | ---
Beginning balance, common stock (in shares) at Mar. 31, 2024 |  | 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 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) | (434,349) |  |  |  |  |
Unrealized net investment gains | 28 |  |  | 28 |  |
Unrealized net (losses) gains on derivative financial instruments | 154 |  |  | 154 |  |
Cumulative translation adjustments | 397 |  |  | 397 |  |
Issuance of common stock pursuant to vesting of restricted stock units (in shares) |  | 2,142,083 |  |  |  |
Issuance of common stock pursuant to vesting of restricted stock units | 2 | $ 2 |  |  |  |
Stock-based compensation expense for restricted stock units granted to employees | 35,270 |  | 35,270 |  |  |
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) |  |  |  |  | 2,044,168 |
Repurchase of treasury stock | (38,756) |  |  |  | $ (38,756) |
Ending balance, common stock (in shares) at Sep. 30, 2024 |  | 133,671,490 |  |  |  |
Ending balance at Sep. 30, 2024 | 1,459,388 | $ 133 | 3,221,213 | 4,151 | $ (1,654,239) | (111,870)
Ending balance, treasury stock (in shares) at Sep. 30, 2024 |  |  |  |  | 61,956,261 |
Beginning balance, common stock (in shares) at Jun. 30, 2024 |  | 133,189,228 |  |  |  |
Beginning balance at Jun. 30, 2024 | 1,431,996 | $ 133 | 3,201,998 | 3,404 | $ (1,652,642) | (120,897)
Beginning balance, treasury stock (in shares) at Jun. 30, 2024 |  |  |  |  | 61,877,819 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) | 9,027 |  |  |  |  | 9,027
Unrealized net investment gains | 21 |  |  | 21 |  |
Unrealized net (losses) gains on derivative financial instruments | 198 |  |  | 198 |  |
Cumulative translation adjustments | 528 |  |  | 528 |  |
Issuance of common stock pursuant to vesting of restricted stock units (in shares) |  | 269,164 |  |  |  |
Stock-based compensation expense for restricted stock units granted to employees | 14,638 |  | 14,638 |  |  |
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) |  |  |  |  | 78,442 |
Repurchase of treasury stock | (1,597) |  |  |  | $ (1,597) |
Ending balance, common stock (in shares) at Sep. 30, 2024 |  | 133,671,490 |  |  |  |
Ending balance at Sep. 30, 2024 | $ 1,459,388 | $ 133 | 3,221,213 | 4,151 | $ (1,654,239) | (111,870)
Ending balance, treasury stock (in shares) at Sep. 30, 2024 |  |  |  |  | 61,956,261 |
Beginning balance, common stock (in shares) at Mar. 31, 2025 | 72,060,237 | 134,038,262 |  |  |  |
Beginning balance at Mar. 31, 2025 | $ 1,560,395 | $ 134 | 3,255,333 | 4,073 | $ (1,654,702) | (44,443)
Beginning balance, treasury stock (in shares) at Mar. 31, 2025 | 61,978,025 |  |  |  | 61,978,025 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) | $ 22,149 |  |  |  |  | 22,149
Unrealized net investment gains | 13 |  |  | 13 |  |
Unrealized net (losses) gains on derivative financial instruments | (128) |  |  | (128) |  |
Cumulative translation adjustments | (4) |  |  | (4) |  |
Issuance of common stock pursuant to vesting of restricted stock units (in shares) |  | 2,069,630 |  |  |  |
Issuance of common stock pursuant to vesting of restricted stock units | 2 | $ 2 |  |  |  |
Stock-based compensation expense for restricted stock units granted to employees | 32,499 |  | 32,499 |  |  |
Issuance of common stock under employee stock purchase plan (in shares) |  | 216,457 |  |  |  |
Issuance of common stock under employee stock purchase plan | 5,388 |  | 5,388 |  |  |
Repurchase of treasury stock (in shares) |  |  |  |  | 2,160,272 |
Repurchase of treasury stock | $ (46,762) |  |  |  | $ (46,762) |
Ending balance, common stock (in shares) at Sep. 30, 2025 | 72,186,052 | 136,324,349 |  |  |  |
Ending balance at Sep. 30, 2025 | $ 1,573,552 | $ 136 | 3,293,220 | 3,954 | $ (1,701,464) | (22,294)
Ending balance, treasury stock (in shares) at Sep. 30, 2025 | 64,138,297 |  |  |  | 64,138,297 |
Beginning balance, common stock (in shares) at Jun. 30, 2025 |  | 135,857,091 |  |  |  |
Beginning balance at Jun. 30, 2025 | $ 1,547,551 | $ 135 | 3,274,682 | 4,337 | $ (1,683,481) | (48,122)
Beginning balance, treasury stock (in shares) at Jun. 30, 2025 |  |  |  |  | 63,336,389 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) | 25,828 |  |  |  |  | 25,828
Unrealized net investment gains | 14 |  |  | 14 |  |
Unrealized net (losses) gains on derivative financial instruments | (250) |  |  | (250) |  |
Cumulative translation adjustments | (147) |  |  | (147) |  |
Issuance of common stock pursuant to vesting of restricted stock units (in shares) |  | 250,801 |  |  |  |
Issuance of common stock pursuant to vesting of restricted stock units | 1 | $ 1 |  |  |  |
Stock-based compensation expense for restricted stock units granted to employees | 13,150 |  | 13,150 |  |  |
Issuance of common stock under employee stock purchase plan (in shares) |  | 216,457 |  |  |  |
Issuance of common stock under employee stock purchase plan | 5,388 |  | 5,388 |  |  |
Repurchase of treasury stock (in shares) |  |  |  |  | 801,908 |
Repurchase of treasury stock | $ (17,983) |  |  |  | $ (17,983) |
Ending balance, common stock (in shares) at Sep. 30, 2025 | 72,186,052 | 136,324,349 |  |  |  |
Ending balance at Sep. 30, 2025 | $ 1,573,552 | $ 136 | $ 3,293,220 | $ 3,954 | $ (1,701,464) | $ (22,294)
Ending balance, treasury stock (in shares) at Sep. 30, 2025 | 64,138,297 |  |  |  | 64,138,297 |

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