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SCHEDULE II - CONDENSED FINANCIAL INFORMATION OF REGISTRANT - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Cash flows from operating activities: |  |  |
Net income | $ 762,994 | $ 712,949 | $ 865,349
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Deferred tax (benefit) expense | 1,805 | 1,550 | (5,235)
Loss on debt extinguishment | 0 | 0 | 40,199
Change in certain assets and liabilities: |  |  |
Accrued investment income | (2,290) | (3,596) | (3,276)
Net cash provided by operating activities | 725,032 | 712,962 | 650,012
Cash flows from investing activities: |  |  |
Purchases of investments | (1,555,624) | (1,469,540) | (674,406)
Proceeds from sales of investments | 45,087 | 376,598 | 399,661
Net cash (used in) provided by investing activities | (142,005) | (179,190) | 410,485
Cash flows from financing activities: |  |  |
Conversion / purchase of convertible junior subordinated debentures | 0 | (28,637) | (89,118)
Redemption of 5.75% senior notes | 0 | 0 | (242,296)
Cash portion of loss on debt extinguishment | 0 | 0 | (39,514)
Repurchase of common stock | (569,478) | (337,182) | (385,573)
Dividends paid | (130,500) | (122,965) | (110,947)
Payment of withholding taxes related to share-based compensation net share settlement | (19,066) | (7,257) | (10,094)
Net cash used in financing activities | (719,044) | (496,041) | (1,032,542)
Net (decrease) increase in cash and cash equivalents and restricted cash and cash equivalents | (136,017) | 37,731 | 27,955
Cash and cash equivalents and restricted cash and cash equivalents at beginning of year | 370,644 | 332,913 | 304,958
Cash and cash equivalents and restricted cash and cash equivalents at end of year | 234,627 | 370,644 | 332,913
Parent Company |  |  |
Cash flows from operating activities: |  |  |
Net income | 762,994 | 712,949 | 865,349
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Equity in net income of subsidiaries | (752,882) | (719,599) | (930,979)
Dividends received from subsidiaries | 526,879 | 326,013 | 626,695
Deferred tax (benefit) expense | 36,798 | 86,219 | 119,588
Loss on debt extinguishment | 0 | 0 | 38,870
Other | 19,298 | 26,726 | 33,619
Change in certain assets and liabilities: |  |  |
Accounts receivable - affiliates | 348 | (1,996) | 1,266
Income taxes receivable | (5,683) | 45,913 | (43,123)
Accrued investment income | 1,007 | (499) | 931
Accrued interest | 0 | 349 | (7,230)
Net cash provided by operating activities | 588,759 | 476,075 | 704,986
Cash flows from investing activities: |  |  |
Return of capital from subsidiaries | 40,000 | 0 | 0
Purchases of investments | (514,482) | (566,795) | (1,457)
Proceeds from sales of investments | 546,111 | 555,957 | 287,924
Net cash (used in) provided by investing activities | 71,629 | (10,838) | 286,467
Cash flows from financing activities: |  |  |
Conversion / purchase of convertible junior subordinated debentures | 0 | (28,637) | (89,118)
Redemption of 5.75% senior notes | 0 | 0 | (242,296)
Cash portion of loss on debt extinguishment | 0 | 0 | (38,185)
Repurchase of common stock | (569,478) | (337,182) | (385,573)
Dividends paid | (130,500) | (122,965) | (110,947)
Payment of withholding taxes related to share-based compensation net share settlement | (19,066) | (7,257) | (10,094)
Net cash used in financing activities | (719,044) | (496,041) | (876,213)
Net (decrease) increase in cash and cash equivalents and restricted cash and cash equivalents | (58,656) | (30,804) | 115,240
Cash and cash equivalents and restricted cash and cash equivalents at beginning of year | 208,600 | 239,404 | 124,164
Cash and cash equivalents and restricted cash and cash equivalents at end of year | $ 149,944 | $ 208,600 | $ 239,404

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