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Segment Information (Financial Data by Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Segment Reporting Information [Line Items] |  |
Net premiums earned | $ 244,150 | $ 239,787
Net investment income | 33,897 | 30,310
Equity in earnings (loss) of unconsolidated subsidiaries | 2,963 | (1,121)
Net investment gains (losses) | (268) | 1,912
Other income (expense) | 3,955 | 787
Net losses and loss adjustment expenses | (194,694) | (205,296)
Underwriting, policy acquisition and operating expenses | (78,005) | (67,788)
SPC U.S. federal income tax benefit (expense) | (416) | (532)
SPC dividend (expense) income | (607) | (1,942)
Interest expense | (5,657) | (5,463)
Income tax benefit (expense) | (692) | 2,172
Segment results | 4,626 | (7,174)
Contingent consideration | 0 | (2,000)
Net income (loss) | 4,626 | (6,174)
Depreciation and amortization, net of accretion | 5,332 | 7,677
Operating segments | Specialty P&C |  |
Segment Reporting Information [Line Items] |  |
Net premiums earned | 188,888 | 183,684
Net investment income | 0 | 0
Equity in earnings (loss) of unconsolidated subsidiaries | 0 | 0
Net investment gains (losses) | 0 | 0
Other income (expense) | 1,353 | 990
Net losses and loss adjustment expenses | (152,994) | (166,029)
Underwriting, policy acquisition and operating expenses | (51,049) | (42,681)
SPC U.S. federal income tax benefit (expense) | 0 | 0
SPC dividend (expense) income | 0 | 0
Interest expense | 0 | 0
Income tax benefit (expense) | 0 | 0
Segment results | (13,802) | (24,036)
Depreciation and amortization, net of accretion | 2,429 | 2,640
Operating segments | Workers' Compensation Insurance |  |
Segment Reporting Information [Line Items] |  |
Net premiums earned | 41,094 | 40,803
Net investment income | 0 | 0
Equity in earnings (loss) of unconsolidated subsidiaries | 0 | 0
Net investment gains (losses) | 0 | 0
Other income (expense) | 477 | 581
Net losses and loss adjustment expenses | (31,636) | (30,844)
Underwriting, policy acquisition and operating expenses | (14,490) | (12,980)
SPC U.S. federal income tax benefit (expense) | 0 | 0
SPC dividend (expense) income | 0 | 0
Interest expense | 0 | 0
Income tax benefit (expense) | 0 | 0
Segment results | (4,555) | (2,440)
Depreciation and amortization, net of accretion | 1,164 | 869
Operating segments | Segregated Portfolio Cell Reinsurance |  |
Segment Reporting Information [Line Items] |  |
Net premiums earned | 14,168 | 15,300
Net investment income | 693 | 420
Equity in earnings (loss) of unconsolidated subsidiaries | 0 | 0
Net investment gains (losses) | 1,471 | 1,160
Other income (expense) | (1) | 1
Net losses and loss adjustment expenses | (10,064) | (8,423)
Underwriting, policy acquisition and operating expenses | (4,713) | (5,035)
SPC U.S. federal income tax benefit (expense) | (416) | (532)
SPC dividend (expense) income | (607) | (1,942)
Interest expense | 0 | 0
Income tax benefit (expense) | 0 | 0
Segment results | 531 | 949
Depreciation and amortization, net of accretion | (370) | 64
Operating segments | Corporate |  |
Segment Reporting Information [Line Items] |  |
Net premiums earned | 0 | 0
Net investment income | 33,204 | 29,890
Equity in earnings (loss) of unconsolidated subsidiaries | 2,963 | (1,121)
Net investment gains (losses) | (1,739) | 752
Other income (expense) | 3,061 | 327
Net losses and loss adjustment expenses | 0 | 0
Underwriting, policy acquisition and operating expenses | (8,688) | (8,204)
SPC U.S. federal income tax benefit (expense) | 0 | 0
SPC dividend (expense) income | 0 | 0
Interest expense | (5,657) | (5,463)
Income tax benefit (expense) | (692) | 2,172
Segment results | 22,452 | 18,353
Depreciation and amortization, net of accretion | 2,109 | 4,104
Inter-segment Eliminations |  |
Segment Reporting Information [Line Items] |  |
Net premiums earned | 0 | 0
Net investment income | 0 | 0
Equity in earnings (loss) of unconsolidated subsidiaries | 0 | 0
Net investment gains (losses) | 0 | 0
Other income (expense) | (935) | (1,112)
Net losses and loss adjustment expenses | 0 | 0
Underwriting, policy acquisition and operating expenses | 935 | 1,112
SPC U.S. federal income tax benefit (expense) | 0 | 0
SPC dividend (expense) income | 0 | 0
Interest expense | 0 | 0
Income tax benefit (expense) | 0 | 0
Segment results | 0 | 0
Depreciation and amortization, net of accretion | $ 0 | 0
Segment reconciling items |  |
Segment Reporting Information [Line Items] |  |
Contingent consideration |  | $ 1,000

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