Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues
Net premiums earned	$ 242,420,000	$ 258,355,000	$ 730,068,000	$ 771,337,000
Net investment income	32,754,000	24,745,000	94,714,000	67,132,000
Equity in earnings (loss) of unconsolidated subsidiaries	(61,000)	(6,852,000)	5,450,000	5,948,000
Net investment gains (losses):
Impairment losses	(141,000)	0	(3,117,000)	(972,000)
Portion of impairment losses recognized in other comprehensive income (loss) before taxes	0	0	0	419,000
Net impairment losses recognized in earnings	(141,000)	0	(3,117,000)	(553,000)
Other net investment gains (losses)	(2,561,000)	(8,262,000)	6,273,000	(45,099,000)
Total net investment gains (losses)	(2,702,000)	(8,262,000)	3,156,000	(45,652,000)
Other income	3,336,000	5,097,000	6,864,000	13,215,000
Total revenues	275,747,000	273,083,000	840,252,000	811,980,000
Expenses
Net losses and loss adjustment expenses	208,891,000	198,073,000	605,245,000	585,166,000
Underwriting, policy acquisition and operating expenses:
Operating expense	41,132,000	45,847,000	118,394,000	127,595,000
DPAC amortization	32,882,000	34,832,000	100,385,000	102,193,000
SPC U.S. federal income tax expense (benefit)	(175,000)	433,000	1,351,000	1,424,000
SPC dividend expense (income)	(2,518,000)	183,000	3,171,000	1,697,000
Interest expense	5,514,000	5,513,000	16,478,000	14,872,000
Goodwill impairment	44,110,000	0	44,110,000	0
Total expenses	329,836,000	284,881,000	889,134,000	832,947,000
Income (loss) before income taxes	(54,089,000)	(11,798,000)	(48,882,000)	(20,967,000)
Provision for income taxes:
Current expense (benefit)	(1,228,000)	1,953,000	(453,000)	1,411,000
Deferred expense (benefit)	(3,427,000)	(4,626,000)	(3,448,000)	(8,034,000)
Total income tax expense (benefit)	(4,655,000)	(2,673,000)	(3,901,000)	(6,623,000)
Net income (loss)	(49,434,000)	(9,125,000)	(44,981,000)	(14,344,000)
Other comprehensive income (loss), after tax, net of reclassification adjustments	(29,359,000)	(90,053,000)	1,768,000	(340,525,000)
Comprehensive income (loss)	$ (78,793,000)	$ (99,178,000)	$ (43,213,000)	$ (354,869,000)
Earnings (loss) per share:
Basic (in usd per share)	$ (0.95)	$ (0.17)	$ (0.85)	$ (0.27)
Diluted (in usd per share)	$ (0.95)	$ (0.17)	$ (0.85)	$ (0.27)
Weighted average number of common shares outstanding:
Basic (in shares)	51,837	53,990	53,205	54,023
Diluted (in shares)	52,006	54,124	53,339	54,151
Cash dividends declared per common share (in usd per share)	$ 0	$ 0.05	$ 0.05	$ 0.15