Reserve for Losses and Loss Adjustment Expenses - Schedule of IBNR Liabilities and Claims Frequency (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2025 USD ($) claim	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 427,204	$ 554,374	$ 500,157
E&S – excluding commercial auto | Excess and Surplus Lines | 2016
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	151,612
IBNR before E&S ADC	4,913
IBNR net of E&S ADC	$ 994
Claims outstanding | claim	3,440
E&S – excluding commercial auto | Excess and Surplus Lines | 2017
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 158,714
IBNR before E&S ADC	6,707
IBNR net of E&S ADC	$ 1,615
Claims outstanding | claim	3,436
E&S – excluding commercial auto | Excess and Surplus Lines | 2018
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 180,931
IBNR before E&S ADC	11,383
IBNR net of E&S ADC	$ 2,726
Claims outstanding | claim	5,056
E&S – excluding commercial auto | Excess and Surplus Lines | 2019
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 237,568
IBNR before E&S ADC	19,165
IBNR net of E&S ADC	$ 4,556
Claims outstanding | claim	6,758
E&S – excluding commercial auto | Excess and Surplus Lines | 2020
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 296,540
IBNR before E&S ADC	41,965
IBNR net of E&S ADC	$ 13,168
Claims outstanding | claim	6,938
E&S – excluding commercial auto | Excess and Surplus Lines | 2021
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 321,722
IBNR before E&S ADC	75,267
IBNR net of E&S ADC	$ 17,342
Claims outstanding | claim	5,526
E&S – excluding commercial auto | Excess and Surplus Lines | 2022
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 342,533
IBNR before E&S ADC	111,556
IBNR net of E&S ADC	$ 24,177
Claims outstanding | claim	5,308
E&S – excluding commercial auto | Excess and Surplus Lines | 2023
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 335,617
IBNR before E&S ADC	168,378
IBNR net of E&S ADC	$ 35,606
Claims outstanding | claim	4,663
E&S – excluding commercial auto | Excess and Surplus Lines | 2024
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 345,686
IBNR before E&S ADC	264,885
IBNR net of E&S ADC	$ 264,885
Claims outstanding | claim	3,462
E&S – excluding commercial auto | Excess and Surplus Lines | 2025
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 351,985
IBNR before E&S ADC	328,296
IBNR net of E&S ADC	$ 328,296
Claims outstanding | claim	2,105
Commercial Auto | Excess and Surplus Lines | 2016
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 165,286
IBNR before E&S ADC	167
IBNR net of E&S ADC	$ 6
Claims outstanding | claim	89,116
Commercial Auto | Excess and Surplus Lines | 2017
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 374,566
IBNR before E&S ADC	349
IBNR net of E&S ADC	$ 29
Claims outstanding | claim	134,150
Commercial Auto | Excess and Surplus Lines | 2018
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 387,645
IBNR before E&S ADC	1,431
IBNR net of E&S ADC	$ 71
Claims outstanding | claim	97,342
Commercial Auto | Excess and Surplus Lines | 2019
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 413,077
IBNR before E&S ADC	4,282
IBNR net of E&S ADC	$ 37
Claims outstanding | claim	71,494
Commercial Auto | Excess and Surplus Lines | 2020
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 22,927
IBNR before E&S ADC	1,539
IBNR net of E&S ADC	$ 341
Claims outstanding | claim	637
Commercial Auto | Excess and Surplus Lines | 2021
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 20,774
IBNR before E&S ADC	2,396
IBNR net of E&S ADC	$ 512
Claims outstanding | claim	792
Commercial Auto | Excess and Surplus Lines | 2022
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 21,370
IBNR before E&S ADC	4,323
IBNR net of E&S ADC	$ 363
Claims outstanding | claim	536
Commercial Auto | Excess and Surplus Lines | 2023
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 16,879
IBNR before E&S ADC	3,927
IBNR net of E&S ADC	$ 794
Claims outstanding | claim	321
Commercial Auto | Excess and Surplus Lines | 2024
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 12,491
IBNR before E&S ADC	8,433
IBNR net of E&S ADC	$ 8,433
Claims outstanding | claim	255
Commercial Auto | Excess and Surplus Lines | 2025
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 11,100
IBNR before E&S ADC	9,943
IBNR net of E&S ADC	$ 9,943
Claims outstanding | claim	200
Individual Risk Workers' Compensation | Specialty Admitted Insurance | 2016
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 12,484
IBNR before E&S ADC	$ 1
Claims outstanding | claim	836
Individual Risk Workers' Compensation | Specialty Admitted Insurance | 2017
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 15,311
IBNR before E&S ADC	$ 1
Claims outstanding | claim	1,093
Individual Risk Workers' Compensation | Specialty Admitted Insurance | 2018
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 11,894
IBNR before E&S ADC	$ (2)
Claims outstanding | claim	1,239
Individual Risk Workers' Compensation | Specialty Admitted Insurance | 2019
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 17,257
IBNR before E&S ADC	$ 30
Claims outstanding | claim	1,555
Individual Risk Workers' Compensation | Specialty Admitted Insurance | 2020
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 18,235
IBNR before E&S ADC	$ 90
Claims outstanding | claim	1,381
Individual Risk Workers' Compensation | Specialty Admitted Insurance | 2021
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 12,472
IBNR before E&S ADC	$ 219
Claims outstanding | claim	1,302
Individual Risk Workers' Compensation | Specialty Admitted Insurance | 2022
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 11,439
IBNR before E&S ADC	$ 219
Claims outstanding | claim	1,050
Individual Risk Workers' Compensation | Specialty Admitted Insurance | 2023
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 19,118
IBNR before E&S ADC	$ 349
Claims outstanding | claim	910
Individual Risk Workers' Compensation | Specialty Admitted Insurance | 2024
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 9,760
IBNR before E&S ADC	$ 435
Claims outstanding | claim	285
Individual Risk Workers' Compensation | Specialty Admitted Insurance | 2025
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 276
IBNR before E&S ADC	$ 275
Claims outstanding | claim	0
Fronting and Programs | Specialty Admitted Insurance | 2016
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 13,336
IBNR before E&S ADC	$ 71
Claims outstanding | claim	2,825
Fronting and Programs | Specialty Admitted Insurance | 2017
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 23,185
IBNR before E&S ADC	$ 363
Claims outstanding | claim	6,809
Fronting and Programs | Specialty Admitted Insurance | 2018
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 19,021
IBNR before E&S ADC	$ 726
Claims outstanding | claim	7,423
Fronting and Programs | Specialty Admitted Insurance | 2019
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 18,196
IBNR before E&S ADC	$ 793
Claims outstanding | claim	8,180
Fronting and Programs | Specialty Admitted Insurance | 2020
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 35,930
IBNR before E&S ADC	$ 2,089
Claims outstanding | claim	9,254
Fronting and Programs | Specialty Admitted Insurance | 2021
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 47,995
IBNR before E&S ADC	$ 4,322
Claims outstanding | claim	11,027
Fronting and Programs | Specialty Admitted Insurance | 2022
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 49,139
IBNR before E&S ADC	$ 7,030
Claims outstanding | claim	10,370
Fronting and Programs | Specialty Admitted Insurance | 2023
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 62,761
IBNR before E&S ADC	$ 12,661
Claims outstanding | claim	10,389
Fronting and Programs | Specialty Admitted Insurance | 2024
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 56,860
IBNR before E&S ADC	$ 18,204
Claims outstanding | claim	9,200
Fronting and Programs | Specialty Admitted Insurance | 2025
Claims Development [Line Items]
Incurred Losses and Loss Adj Expenses	$ 35,490
IBNR before E&S ADC	$ 22,821
Claims outstanding | claim	5,390