Schedule II - Condensed Statements of Cash Flows (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Loss on sale of subsidiary	$ 328,000	$ 0	$ 0
Depreciation and amortization	6,569,000	8,869,000	10,626,000
Bond amortization and accretion	848,000	744,000	1,006,000
Net realized losses (gains) on investments	412,000	190,000	5,466,000
Net unrealized gains on equity securities	(4,999,000)	(1,996,000)	(2,884,000)
Deferred income taxes, net	10,284,000	(2,364,000)	14,436,000
Stock based compensation	4,299,000	2,545,000	1,318,000
Fixed asset and intangible asset disposals	1,369,000	141,000	1,147,000
Changes in operating assets and liabilities:
Accrued investment income	(172,000)	(1,177,000)	83,000
Other assets	1,563,000	21,526,000	(55,589,000)
Accounts payable and accrued expenses	(10,890,000)	11,914,000	2,142,000
Net cash provided by (used in) operating activities	71,025,000	243,509,000	(136,003,000)
INVESTING ACTIVITIES
Purchases of investments available-for-sale	(86,995,000)	(156,316,000)	(37,780,000)
Net cash provided by (used in) investing activities	620,000	(179,211,000)	(2,544,000)
FINANCING ACTIVITIES
Tax withholding payment related to net settlement of equity awards	(1,855,000)	(1,359,000)	(24,000)
Dividends	0	(24,102,000)	0
Proceeds from issuance of common stock, including exercise of stock options	774,000	11,621,000	26,793,000
Net cash provided by (used in) financing activities	(1,081,000)	(13,840,000)	26,769,000
Increase (decrease) in cash, cash equivalents and restricted cash, including cash classified as assets held for sale	70,564,000	50,458,000	(111,778,000)
Cash, cash equivalents and restricted cash at beginning of period	199,393,000
Cash, cash equivalents and restricted at end of period	292,854,000	199,393,000
Parent
OPERATING ACTIVITIES
Net income	106,837,000	75,718,000	309,911,000
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Dividends received from subsidiaries	23,000,000	14,300,000	0
Earnings from subsidiaries	(114,455,000)	(82,943,000)	(80,757,000)
Loss on sale of subsidiary	148,000	0	0
Disposition of former subsidiary	0	(1,006,000)	(238,440,000)
Depreciation and amortization	333,000	332,000	333,000
Bond amortization and accretion	2,000	6,000	7,000
Net realized losses (gains) on investments	(5,000)	3,000	0
Net unrealized gains on equity securities	0	(1,000)	(2,000)
Deferred income taxes, net	258,000	141,000	157,000
Stock based compensation	4,299,000	2,545,000	1,318,000
Fixed asset and intangible asset disposals	0	0	215,000
Changes in operating assets and liabilities:
Accrued investment income	6,000	(79,000)	(13,000)
Other assets	(5,818,000)	4,154,000	(47,848,000)
Accounts payable and accrued expenses	(19,454,000)	24,207,000	(3,000)
Intercompany payable	1,997,000	(8,062,000)	47,624,000
Operating lease liability	0	0	(369,000)
Net cash provided by (used in) operating activities	(2,852,000)	29,315,000	(7,867,000)
INVESTING ACTIVITIES
Proceeds from sales of investments available-for-sale	513,000	590,000	406,000
Purchases of investments available-for-sale	(973,000)	0	0
Investment in subsidiaries	(23,269,000)	(1,265,000)	(676,000)
Proceeds from sale of subsidiary	25,679,000	0	0
Net cash provided by (used in) investing activities	1,950,000	(675,000)	(270,000)
FINANCING ACTIVITIES
Tax withholding payment related to net settlement of equity awards	(1,855,000)	(1,359,000)	(24,000)
Dividends	0	(24,102,000)	0
Proceeds from issuance of common stock, including exercise of stock options	774,000	11,621,000	26,793,000
Net cash provided by (used in) financing activities	(1,081,000)	(13,840,000)	26,769,000
Increase (decrease) in cash, cash equivalents and restricted cash, including cash classified as assets held for sale	(1,983,000)	14,800,000	18,632,000
Cash, cash equivalents and restricted cash at beginning of period	34,377,000	19,577,000	945,000
Cash, cash equivalents and restricted at end of period	$ 32,394,000	$ 34,377,000	$ 19,577,000