Segment Reporting - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenues
Net premiums earned	$ 86,928	$ 72,638	$ 165,229	$ 140,917
Fee Income	1,524	191	2,084	316
Net investment income	11,891	5,728	19,786	10,981
Net realized and unrealized gains (losses) on investments	1,409	(4,215)	(3,190)	(1,828)
Other income	28	24	993	48
Total revenues	101,780	74,366	184,902	150,434
Expenses
Losses and loss adjustment expenses	50,412	44,128	97,274	85,174
Policy acquisition costs	16,088	15,329	30,820	30,232
Operating expenses	12,342	8,986	22,495	17,473
Interest expense	447	544	894	1,094
Other expenses	161	56	399	110
Total expenses	79,450	69,043	151,882	134,083
Income before income taxes	22,330	5,323	33,020	16,351
Income tax expense	4,713	1,207	6,953	3,277
Net income	17,617	4,116	26,067	13,074
Less: Net income (loss) attributable to non-controlling interest - General Partner	(5)	(828)	(16)	374
Net income attributable to stockholders	17,622	4,944	26,083	12,700
Reportable Segment | Operating Segments
Revenues
Net premiums earned	86,928	72,638	165,229	140,917
Fee Income	1,524	191	2,084	316
Net investment income	11,891	5,728	19,786	10,981
Net realized and unrealized gains (losses) on investments	1,409	(4,215)	(3,190)	(1,828)
Other income	28	24	993	48
Total revenues	101,780	74,366	184,902	150,434
Expenses
Losses and loss adjustment expenses	50,412	44,128	97,274	85,174
Policy acquisition costs	16,088	15,329	30,820	30,232
Operating expenses	12,342	8,986	22,495	17,473
Interest expense	447	544	894	1,094
Other expenses	161	56	399	110
Total expenses	79,450	69,043	151,882	134,083
Income before income taxes	22,330	5,323	33,020	16,351
Income tax expense	4,713	1,207	6,953	3,277
Net income	17,617	4,116	26,067	13,074
Less: Net income (loss) attributable to non-controlling interest - General Partner	(5)	(828)	(16)	374
Net income attributable to stockholders	17,622	4,944	26,083	12,700
Reportable Segment | Adjustments and reconciling items
Expenses
Net income attributable to stockholders	$ 0	$ 0	$ 0	$ 0