SCHEDULE II - Condensed Financial Information of Registrant - Statements of Cash Flows (Parent Company) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating activities
Net income (loss)		$ 47,427	$ (81,120)	$ (107,684)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Share based compensation expense		5,045	6,631	9,116
Deferred U.S. Federal income tax benefit		(13,098)	(11,205)	(5,972)
Net cash (used in) provided by operating activities	[1]	(18,786)	(247,085)	87,953
Investing activities
Sale of JRG Re		0	96,412	0
Net cash (used in) provided by investing activities		(116,044)	307,032	16,732
Financing activities
Senior debt issuance		25,000	0	0
Senior debt repayments		0	(21,500)	0
Payment of debt issuance costs		(1,179)	0	(1,135)
Enstar common stock investment		0	12,500	0
Payroll taxes withheld and remitted on net settlement of RSUs		(745)	(847)	(1,734)
Dividends on Series A preferred shares		(7,876)	(12,768)	(10,500)
Dividends on common stock		(1,998)	(6,231)	(7,746)
Net cash provided by (used in) financing activities		13,202	(28,846)	(21,115)
Change in cash, cash equivalents, and restricted cash equivalents		(121,628)	31,101	83,570
Cash and cash equivalents at beginning of period		362,345
Cash and cash equivalents at end of period		260,941	362,345
Supplemental information
Interest paid		25,689	28,740	30,697
Parent Company
Operating activities
Net income (loss)		47,427	(81,120)	(107,684)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Provision for depreciation and amortization		521	474	345
Share based compensation expense		5,045	6,631	9,116
Equity in undistributed earnings of subsidiaries		(51,569)	43,825	73,349
Deferred U.S. Federal income tax benefit		(14,386)	0	0
Changes in operating assets and liabilities		985	2,996	47,673
Net cash (used in) provided by operating activities		(11,977)	(27,194)	22,799
Investing activities
Sale of JRG Re		0	136,213	0
Dividends from subsidiaries		0	5,755	0
Net cash (used in) provided by investing activities		0	141,968	0
Financing activities
Senior debt issuance		25,000	0	0
Senior debt repayments		0	(21,500)	0
Contribution to subsidiary		(55,000)	(23,364)	0
Payment of debt issuance costs		(1,179)	0	(1,135)
Enstar common stock investment		0	12,500	0
Payroll taxes withheld and remitted on net settlement of RSUs		(745)	(847)	(1,734)
Dividends on Series A preferred shares		(7,876)	(12,768)	(10,500)
Dividends on common stock		(1,998)	(6,231)	(7,746)
Net cash provided by (used in) financing activities		(41,798)	(52,210)	(21,115)
Change in cash, cash equivalents, and restricted cash equivalents		(53,775)	62,564	1,684
Cash and cash equivalents at beginning of period		64,525	1,961	277
Cash and cash equivalents at end of period		10,750	64,525	1,961
Supplemental information
Interest paid		$ 16,675	$ 17,137	$ 16,949

[1] Cash provided by (used in) operating activities for the years ended December 31, 2025, 2024, and 2023 reflects the activity in restricted cash equivalents above. As permitted under the agreements establishing the Indemnity Trust and the LPT Trust, we have withdrawn collateral from the Indemnity Trust and the LPT Trust to fund the Loss Fund Trust as required under the Administrative Services Agreement. Amounts on deposit in the Loss Fund Trust are included in restricted cash equivalents on the Company's consolidated balance sheets. See “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations – Amounts Recoverable from an Indemnifying Party and Reinsurer on Legacy Commercial Auto Book”. Excluding the restricted cash activity above, cash provided by (used in) operating activities was $1.4 million, $(203.3) million, and $118.7 million for the years ended December 31, 2025, 2024, and 2023, respectively. The $203.3 million of cash used in operating activities for the year ended December 31, 2024 primarily reflects the $313.2 million and $52.8 million of reinsurance premium paid in 2024 related to the E&S ADC and E&S Top Up ADC (See Note 8).