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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock Voting | Additional Paid In Capital | Accumulated Other Comprehensive Income (loss) | 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 (loss) income | 17,262 |  |  |  |  | 17,262
Unrealized net investment gains (losses) | (97) |  |  | (97) |  |
Unrealized net gains (losses) on derivative financial instruments | (192) |  |  | (192) |  |
Cumulative translation adjustments | (70) |  |  | (70) |  |
Issuance of common stock pursuant to vesting of restricted stock units (in shares) |  | 1,981,783 |  |  |  |
Issuance of common stock pursuant to vesting of restricted stock units | 2 | $ 2 |  |  |  |
Stock-based compensation expense for restricted stock units granted to employees | 37,008 |  | 37,008 |  |  |
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) |  |  |  |  | 1,742,718 |
Repurchase of treasury stock | (49,898) |  |  |  | $ (49,898) |
Ending balance, common stock (in shares) at Sep. 30, 2023 |  | 130,875,398 |  |  |  |
Ending balance at Sep. 30, 2023 | 2,039,670 | $ 130 | 3,142,712 | 5,379 | $ (1,596,026) | 487,475
Ending balance, treasury stock (in shares) at Sep. 30, 2023 |  |  |  |  | 59,177,497 |
Beginning balance, common stock (in shares) at Jun. 30, 2023 |  | 130,016,041 |  |  |  |
Beginning balance at Jun. 30, 2023 | 2,031,210 | $ 130 | 3,118,798 | 5,803 | $ (1,559,534) | 466,013
Beginning balance, treasury stock (in shares) at Jun. 30, 2023 |  |  |  |  | 57,869,951 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net (loss) income | 21,462 |  |  |  |  | 21,462
Unrealized net investment gains (losses) | 9 |  |  | 9 |  |
Unrealized net gains (losses) on derivative financial instruments | (295) |  |  | (295) |  |
Cumulative translation adjustments | (138) |  |  | (138) |  |
Issuance of common stock pursuant to vesting of restricted stock units (in shares) |  | 649,566 |  |  |  |
Stock-based compensation expense for restricted stock units granted to employees | 17,908 |  | 17,908 |  |  |
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) |  |  |  |  | 1,307,546 |
Repurchase of treasury stock | (36,492) |  |  |  | $ (36,492) |
Ending balance, common stock (in shares) at Sep. 30, 2023 |  | 130,875,398 |  |  |  |
Ending balance at Sep. 30, 2023 | $ 2,039,670 | $ 130 | 3,142,712 | 5,379 | $ (1,596,026) | 487,475
Ending balance, treasury stock (in shares) at Sep. 30, 2023 |  |  |  |  | 59,177,497 |
Ending balance, common stock (in shares) at Sep. 30, 2024 | 71,715,229 | 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 |  |  |  | 61,956,261 |
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 (loss) income | $ (434,349) |  |  |  |  | (434,349)
Unrealized net investment gains (losses) | 28 |  |  | 28 |  |
Unrealized net gains (losses) 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 | 71,715,229 | 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 |  |  |  | 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 (loss) income | 9,027 |  |  |  |  | 9,027
Unrealized net investment gains (losses) | 21 |  |  | 21 |  |
Unrealized net gains (losses) 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 | 71,715,229 | 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 |  |  |  | 61,956,261 |

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