Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
OPERATING ACTIVITIES
Net income	$ 17,617	$ 4,116	$ 26,067	$ 13,074
Adjustments to reconcile net income to net cash provided by operating activities			24,729	51,651
Net cash provided by operating activities			50,796	64,725
INVESTING ACTIVITIES
Purchase of fixed-maturity securities, available-for-sale			(231,370)	(208,007)
Proceeds from sale of fixed-maturity securities, available-for-sale			253,709	47,364
Proceeds from maturities and redemptions of fixed-maturity securities, available-for-sale			576	8,700
Sale of equity securities			0	91
Purchases of Utility & Infrastructure Investments			(10,000)	0
Proceeds from redemptions of Utility & Infrastructure Investments			106,196	414
Loans to affiliates			(94,000)	0
Purchase of software			(4,155)	0
Purchase of other assets			(59)	(74)
Change in Treasury bills, net			(14,612)	(39,199)
Change in short-term investments, net			(192,172)	(41,268)
Proceeds from sale of securities sold, not yet purchased			0	107
Purchases to cover securities sold, not yet purchased			0	(373)
Proceeds from sale of other invested assets			0	415
Net cash used in investing activities			(185,887)	(231,830)
FINANCING ACTIVITIES
Proceeds from issuance of common shares, net			121,710	0
Payments of initial public offering costs			(2,806)	0
Capital contributions			22,741	0
Payments for share repurchases			(2,741)	0
Capital distribution			(6,857)	(414)
Net cash provided by (used in) financing activities			132,047	(414)
Net change in cash and cash equivalents			(3,044)	(167,519)
Cash and cash equivalents, at beginning of period			26,573	264,646	$ 264,646
Cash and cash equivalents, at end of period	$ 23,529	$ 97,127	23,529	97,127	$ 26,573
Supplementary cash flow information:
Cash paid for interest			889	1,087
Income taxes paid			$ 9,000	$ 0