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SEGMENT INFORMATION (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2022 USD ($) segment | Sep. 30, 2021 USD ($)
Segment Reporting [Abstract] |  |  |  |
Number of reportable segments | segment |  |  | 2 |
Segment Information [Line Items] |  |  |  |
Net premiums earned | $ 1,284,866 | $ 1,211,427 | $ 3,820,163 | $ 3,472,090
Other insurance related income | 1,092 | 7,665 | 9,998 | 16,262
Net losses and loss expenses | 941,911 | 911,369 | 2,444,196 | 2,292,559
Acquisition costs | (240,511) | (231,712) | (746,443) | (669,654)
Underwriting-related general and administrative expenses and corporate expenses | (158,245) | (157,960) | (492,872) | (478,820)
Net investment income | 88,177 | 107,339 | 271,744 | 326,174
Foreign exchange gains | 135,660 | 28,032 | 236,934 | 4,316
Interest expense and financing costs | (15,915) | (15,954) | (46,720) | (46,759)
Reorganization expenses | (6,213) | 0 | (21,941) | 0
Amortization of value of business acquired | 0 | (1,028) | 0 | (3,083)
Amortization of intangible assets | (2,729) | (3,149) | (8,188) | (9,163)
Income (loss) before income taxes and interest in income (loss) of equity method investments | (2,187) | 44,223 | 164,248 | 432,672
Income tax (expense) benefit | 363 | (1,186) | 5,304 | (49,827)
Interest in income (loss) of equity method investments | (7,560) | 11,911 | 5,040 | 30,871
Net income (loss) | (9,384) | 54,948 | 174,592 | 413,716
Preferred share dividends | 7,563 | 7,563 | 22,688 | 22,688
Net income (loss) available (attributable) to common shareholders | (16,947) | 47,385 | 151,904 | 391,028
Operating Segments |  |  |  |
Segment Information [Line Items] |  |  |  |
Gross premiums written | 1,707,808 | 1,646,489 | 6,455,899 | 6,123,156
Net premiums written | 1,036,784 | 996,471 | 4,166,502 | 3,979,215
Net premiums earned | 1,284,866 | 1,211,427 | 3,820,163 | 3,472,090
Other insurance related income | 1,092 | 7,665 | 9,998 | 16,262
Net losses and loss expenses | 941,911 | 911,369 | 2,444,196 | 2,292,559
Acquisition costs | (240,511) | (231,712) | (746,443) | (669,654)
Underwriting-related general and administrative expenses and corporate expenses | (132,570) | (134,826) | (413,069) | (396,455)
Underwriting income (loss) | $ (29,034) | $ (58,815) | $ 226,453 | $ 129,684
Net losses and loss expenses ratio (as a percent) | 73.30% | 75.20% | 64.00% | 66.00%
Acquisition cost ratio (as a percent) | 18.70% | 19.10% | 19.50% | 19.30%
General and administrative expense ratio (as a percent) | 12.30% | 13.10% | 12.90% | 13.80%
Combined ratio (as a percent) | 104.30% | 107.40% | 96.40% | 99.10%
Goodwill and intangible assets | $ 301,330 | $ 312,358 | $ 301,330 | $ 312,358
Operating Segments | Insurance |  |  |  |
Segment Information [Line Items] |  |  |  |
Gross premiums written | 1,317,890 | 1,176,500 | 4,114,776 | 3,548,169
Net premiums written | 777,789 | 707,492 | 2,491,120 | 2,128,190
Net premiums earned | 782,101 | 681,008 | 2,303,640 | 1,928,970
Other insurance related income | 151 | 468 | 470 | 1,435
Net losses and loss expenses | 519,006 | 442,681 | 1,346,585 | 1,131,753
Acquisition costs | (139,436) | (123,529) | (422,979) | (348,172)
Underwriting-related general and administrative expenses and corporate expenses | (108,072) | (104,905) | (330,598) | (307,777)
Underwriting income (loss) | $ 15,738 | $ 10,361 | $ 203,948 | $ 142,703
Net losses and loss expenses ratio (as a percent) | 66.40% | 65.00% | 58.50% | 58.70%
Acquisition cost ratio (as a percent) | 17.80% | 18.10% | 18.40% | 18.00%
General and administrative expense ratio (as a percent) | 13.80% | 15.40% | 14.30% | 16.00%
Combined ratio (as a percent) | 98.00% | 98.50% | 91.20% | 92.70%
Goodwill and intangible assets | $ 301,330 | $ 312,358 | $ 301,330 | $ 312,358
Operating Segments | Reinsurance |  |  |  |
Segment Information [Line Items] |  |  |  |
Gross premiums written | 389,918 | 469,989 | 2,341,123 | 2,574,987
Net premiums written | 258,995 | 288,979 | 1,675,382 | 1,851,025
Net premiums earned | 502,765 | 530,419 | 1,516,523 | 1,543,120
Other insurance related income | 941 | 7,197 | 9,528 | 14,827
Net losses and loss expenses | 422,905 | 468,688 | 1,097,611 | 1,160,806
Acquisition costs | (101,075) | (108,183) | (323,464) | (321,482)
Underwriting-related general and administrative expenses and corporate expenses | (24,498) | (29,921) | (82,471) | (88,678)
Underwriting income (loss) | $ (44,772) | $ (69,176) | $ 22,505 | $ (13,019)
Net losses and loss expenses ratio (as a percent) | 84.10% | 88.40% | 72.40% | 75.20%
Acquisition cost ratio (as a percent) | 20.10% | 20.40% | 21.30% | 20.80%
General and administrative expense ratio (as a percent) | 4.90% | 5.60% | 5.40% | 5.80%
Combined ratio (as a percent) | 109.10% | 114.40% | 99.10% | 101.80%
Goodwill and intangible assets | $ 0 | $ 0 | $ 0 | $ 0
Segment Reconciling Items |  |  |  |
Segment Information [Line Items] |  |  |  |
Net investment income | 88,177 | 107,339 | 271,744 | 326,174
Net investment gains (losses) | (146,458) | 10,932 | (414,231) | 113,868
Foreign exchange gains | 135,660 | 28,032 | 236,934 | 4,316
Interest expense and financing costs | (15,915) | (15,954) | (46,720) | (46,759)
Reorganization expenses | (6,213) | 0 | (21,941) | 0
Amortization of value of business acquired | 0 | (1,028) | 0 | (3,083)
Amortization of intangible assets | (2,729) | (3,149) | (8,188) | (9,163)
Corporate Expenses |  |  |  |
Segment Information [Line Items] |  |  |  |
Underwriting-related general and administrative expenses and corporate expenses | $ (25,675) | $ (23,134) | $ (79,803) | $ (82,365)

X
- Definition This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities, the change in fair value of investment-related derivatives not designated as hedges and any hedge ineffectiveness recognized in earnings in relation to investment portfolio-related fair value hedges. + References No definition available. + Details
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