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v3.25.3

Operating Segment Information - Operating Results by Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Revenue |  |  |  |
Net premiums earned | $ 407,695 | $ 389,489 | $ 1,207,944 | $ 1,129,230
Net investment income | 41,270 | 36,694 | 117,414 | 103,502
Net realized gains (losses) | 18,318 | 5,420 | 48,234 | 11,222
Net unrealized gains on equity securities | 41,981 | 38,392 | 43,163 | 87,314
Consolidated revenue | 509,264 | 469,995 | 1,416,755 | 1,331,268
Less: Expenses |  |  |  |
Losses and settlement expenses | 187,998 | 202,118 | 549,814 | 513,741
Insurance operating expenses | 30,215 | 28,868 | 86,683 | 84,892
Earnings before income taxes | 157,245 | 116,825 | 392,391 | 380,119
Reconciliation of earnings before income taxes |  |  |  |
Net investment income | 41,270 | 36,694 | 117,414 | 103,502
Net realized gains (losses) | 18,318 | 5,420 | 48,234 | 11,222
Net unrealized gains on equity securities | 41,981 | 38,392 | 43,163 | 87,314
Interest expense on debt | (1,364) | (1,617) | (4,049) | (4,839)
General corporate expense | (5,045) | (3,994) | (12,747) | (13,144)
Equity in earnings of unconsolidated investees | 1,540 | 1,238 | 7,055 | 7,653
Casualty Segment |  |  |  |
Revenue |  |  |  |
Net premiums earned | 243,508 | 219,638 | 707,194 | 627,014
Property Segment |  |  |  |
Revenue |  |  |  |
Net premiums earned | 126,689 | 133,266 | 389,897 | 396,774
Surety Segment |  |  |  |
Revenue |  |  |  |
Net premiums earned | 37,498 | 36,585 | 110,853 | 105,442
Operating Segments |  |  |  |
Revenue |  |  |  |
Net premiums earned | 407,695 | 389,489 | 1,207,944 | 1,129,230
Net investment income | 41,270 | 36,694 | 117,414 | 103,502
Net realized gains (losses) | 18,318 | 5,420 | 48,234 | 11,222
Net unrealized gains on equity securities | 41,981 | 38,392 | 43,163 | 87,314
Consolidated revenue | 509,264 | 469,995 | 1,416,755 | 1,331,268
Less: Expenses |  |  |  |
Earnings before income taxes | 60,545 | 40,692 | 193,321 | 188,411
Reconciliation of earnings before income taxes |  |  |  |
Net investment income | 41,270 | 36,694 | 117,414 | 103,502
Net realized gains (losses) | 18,318 | 5,420 | 48,234 | 11,222
Net unrealized gains on equity securities | 41,981 | 38,392 | 43,163 | 87,314
Operating Segments | Casualty Segment |  |  |  |
Revenue |  |  |  |
Net premiums earned | 243,508 | 219,638 | 707,194 | 627,014
Consolidated revenue | 243,508 | 219,638 | 707,194 | 627,014
Less: Expenses |  |  |  |
Losses and settlement expenses | 150,912 | 137,951 | 438,007 | 369,273
Amortization of deferred acquisition costs | 47,335 | 41,240 | 135,999 | 117,979
Other policy acquisition costs | 23,199 | 21,266 | 67,935 | 64,121
Insurance operating expenses | 17,576 | 16,632 | 50,407 | 49,103
Earnings before income taxes | 4,486 | 2,549 | 14,846 | 26,538
Reconciliation of earnings before income taxes |  |  |  |
Depreciation and amortization expense | 1,517 | 1,428 | 4,556 | 4,228
Operating Segments | Property Segment |  |  |  |
Revenue |  |  |  |
Net premiums earned | 126,689 | 133,266 | 389,897 | 396,774
Consolidated revenue | 126,689 | 133,266 | 389,897 | 396,774
Less: Expenses |  |  |  |
Losses and settlement expenses | 32,815 | 60,991 | 103,999 | 134,950
Amortization of deferred acquisition costs | 26,311 | 27,054 | 79,985 | 80,319
Other policy acquisition costs | 8,219 | 6,054 | 23,496 | 14,696
Insurance operating expenses | 8,920 | 8,765 | 25,567 | 25,511
Earnings before income taxes | 50,424 | 30,402 | 156,850 | 141,298
Reconciliation of earnings before income taxes |  |  |  |
Depreciation and amortization expense | 534 | 485 | 1,553 | 1,406
Operating Segments | Surety Segment |  |  |  |
Revenue |  |  |  |
Net premiums earned | 37,498 | 36,585 | 110,853 | 105,442
Consolidated revenue | 37,498 | 36,585 | 110,853 | 105,442
Less: Expenses |  |  |  |
Losses and settlement expenses | 4,271 | 3,176 | 7,808 | 9,518
Amortization of deferred acquisition costs | 13,103 | 12,471 | 38,361 | 35,574
Other policy acquisition costs | 10,770 | 9,726 | 32,350 | 29,497
Insurance operating expenses | 3,719 | 3,471 | 10,709 | 10,278
Earnings before income taxes | 5,635 | 7,741 | 21,625 | 20,575
Reconciliation of earnings before income taxes |  |  |  |
Depreciation and amortization expense | 370 | 243 | 1,039 | 755
Corporate |  |  |  |
Revenue |  |  |  |
Net investment income | 41,270 | 36,694 | 117,414 | 103,502
Net realized gains (losses) | 18,318 | 5,420 | 48,234 | 11,222
Net unrealized gains on equity securities | 41,981 | 38,392 | 43,163 | 87,314
Reconciliation of earnings before income taxes |  |  |  |
Net investment income | 41,270 | 36,694 | 117,414 | 103,502
Net realized gains (losses) | 18,318 | 5,420 | 48,234 | 11,222
Net unrealized gains on equity securities | 41,981 | 38,392 | 43,163 | 87,314
Interest expense on debt | (1,364) | (1,617) | (4,049) | (4,839)
General corporate expense | (5,045) | (3,994) | (12,747) | (13,144)
Equity in earnings of unconsolidated investees | $ 1,540 | $ 1,238 | $ 7,055 | $ 7,653

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