Segment Information (Tables)

12 Months Ended

Dec. 31, 2025

Segment Reporting [Abstract]

Schedule of Company's Segment Results

The segment information presented below aligns with the information that is presented regularly to the CEO.

	Excess and Surplus Lines		Specialty Admitted Insurance		Corporate and Other		Total
	(in thousands)
As of and for the Year Ended December 31, 2025
Gross written premiums	$	963,035	$	209,284	$	—	$	1,172,319
Net earned premiums	559,490		40,798		—		600,288
Fee income	—		2,416		—		2,416
Losses and loss adjustment expenses	386,824		40,380		—		427,204
Less: losses and loss adjustment expense - retroactive reinsurance	28,750		—		—		28,750
Losses and loss adjustment expenses excluding retroactive reinsurance	358,074		40,380		—		398,454
Other operating expenses:
Net commissions	59,633		(11,183)		—		48,450
Employee compensation	61,257		9,774		23,005		94,036
All other operating expenses	21,054		9,936		10,488		41,478
	141,944		8,527		33,493		183,964
Underwriting (loss) profit	59,472		(5,693)		(33,493)		20,286
Segment revenues	625,505		60,286		1,823		687,614
Net investment income	65,291		17,011		1,138		83,440
Interest expense	—		—		23,538		23,538
Segment goodwill	181,831		—		—		181,831
Segment assets	3,652,130		1,134,689		73,111		4,859,930

	Excess and Surplus Lines		Specialty Admitted Insurance		Corporate and Other		Total
	(in thousands)
As of and for the Year Ended December 31, 2024
Gross written premiums	$	1,017,029	$	414,743	$	—	$	1,431,772
Net earned premiums	512,237		87,959		—		600,196
Fee income	—		4,585		—		4,585
Losses and loss adjustment expenses	485,951		68,423		—		554,374
Less: losses and loss adjustment expense - retroactive reinsurance	37,237		—		—		37,237
Losses and loss adjustment expenses excluding retroactive reinsurance	448,714		68,423		—		517,137
Other operating expenses:
Net commissions	56,186		(11,243)		—		44,943
Employee compensation	62,176		14,115		23,804		100,095
All other operating expenses	22,616		14,376		11,168		48,160
	140,978		17,248		34,972		193,198
Underwriting (loss) profit	(77,455)		6,873		(34,972)		(105,554)
Segment revenues	594,433		109,472		3,721		707,626
Net investment income	73,341		16,937		2,811		93,089
Interest expense	—		—		24,666		24,666
Segment goodwill	181,831		—		—		181,831
Segment assets	3,516,399		1,390,894		99,783		5,007,076

	Excess and Surplus Lines		Specialty Admitted Insurance		Corporate and Other		Total
	(in thousands)
As of and for the Year Ended December 31, 2023
Gross written premiums	$	1,007,351	$	501,309	$	—	$	1,508,660
Net earned premiums	609,566		98,439		—		708,005
Fee income	—		5,301		—		5,301
Losses and loss adjustment expenses	425,035		75,122		—		500,157
Less: losses and loss adjustment expense - retroactive reinsurance	4,991		—		—		4,991
Losses and loss adjustment expenses excluding retroactive reinsurance	420,044		75,122		—		495,166
Other operating expenses:
Net commissions	61,542		(12,809)		—		48,733
Employee compensation	57,436		18,492		22,502		98,430
All other operating expenses	16,197		18,858		11,438		46,493
	135,175		24,541		33,940		193,656
Underwriting profit (loss)	54,347		4,077		(33,940)		24,484
Segment revenues	690,388		119,777		1,844		812,009
Net investment income	69,325		13,568		1,153		84,046
Interest expense	—		—		24,627		24,627
Segment goodwill	181,831		—		—		181,831
Segment assets	3,083,798		1,387,020		63,039		4,533,857

Schedule of Reconciliation of Underwriting Profit (Loss) of Operating Segments by Individual Segment

The following table reconciles the underwriting profit (loss) of operating segments by individual segment to consolidated income (loss) from continuing operations before income taxes:

	Year Ended December 31,
	2025		2024		2023
	(in thousands)
Underwriting profit (loss) of the operating segments:
Excess and Surplus Lines	$	59,472	$	(77,455)	$	54,347
Specialty Admitted Insurance	(5,693)		6,873		4,077
Total underwriting profit (loss) of operating segments	53,779		(70,582)		58,424
Other operating expenses of the Corporate and Other segment	(33,493)		(34,972)		(33,940)
Underwriting profit (loss)	20,286		(105,554)		24,484
Losses and loss adjustment expenses - retroactive reinsurance	(28,750)		(37,237)		(4,991)
Net investment income	83,440		93,089		84,046
Net realized and unrealized (losses) gains on investments	(2,195)		3,625		10,441
Other income	3,665		6,131		4,216
Other expenses	(2,002)		(6,145)		(3,792)
Interest expense	(23,538)		(24,666)		(24,627)
Amortization of intangible assets	(363)		(363)		(363)
Impairment of intangible assets	—		—		(2,500)
Income (loss) from continuing operations before income taxes	$	50,543	$	(71,120)	$	86,914

Schedule of Gross Written Premiums by Segment and Underwriting Division

Gross written premiums by segment and underwriting division are presented below:

	Year Ended December 31,
	2025		2024		2023
	(in thousands)
Excess Casualty	$	324,507	$	325,017	$	339,870
General Casualty	225,177		237,632		202,861
Manufacturers and Contractors	157,082		176,494		180,074
Excess Property	38,937		53,254		64,574
Energy	43,885		46,405		51,593
Small Business	39,563		39,946		38,561
Allied Health	35,795		31,791		30,904
Commercial Auto	27,947		27,819		29,379
Life Sciences	24,166		25,642		27,595
Sports and Entertainment	19,489		22,192		17,826
Environmental	14,384		20,096		13,832
Professional Liability	9,931		9,367		9,264
Medical Professionals	679		870		955
Management Liability	1,493		504		63
Total Excess and Surplus Lines segment	963,035		1,017,029		1,007,351
Specialty Admitted Insurance segment	209,284		414,743		501,309
Total	$	1,172,319	$	1,431,772	$	1,508,660