Property and Casualty Insurance Activity - Information relating to Incurred and Paid Claims (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2025 USD ($) claim
Liability for Claims and Claims Adjustment Expense [Line Items]
Total	$ 630,055
2016
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	26,062
Total	27,201
IBNR	$ 61
Cumulative Number of Reported Claims by Accident Year | claim	2,884
2017
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	$ 24,941
2017	31,605
Total	37,267
IBNR	$ 57
Cumulative Number of Reported Claims by Accident Year | claim	3,401
2018
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	$ 24,789
2017	32,169
2018	54,455
Total	61,150
IBNR	$ 891
Cumulative Number of Reported Claims by Accident Year | claim	4,238
2019
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	$ 27,887
2017	35,304
2018	56,351
2019	75,092
Total	74,937
IBNR	$ 1,445
Cumulative Number of Reported Claims by Accident Year | claim	4,508
2020
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	$ 27,966
2017	36,160
2018	58,441
2019	72,368
2020	63,083
Total	65,655
IBNR	$ 878
Cumulative Number of Reported Claims by Accident Year | claim	5,896
2021
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	$ 27,417
2017	36,532
2018	59,404
2019	71,544
2020	62,833
2021	96,425
Total	97,737
IBNR	$ 1,810
Cumulative Number of Reported Claims by Accident Year | claim	5,835
2022
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	$ 27,352
2017	36,502
2018	61,237
2019	71,964
2020	63,217
2021	96,673
2022	79,835
Total	77,307
IBNR	$ 2,875
Cumulative Number of Reported Claims by Accident Year | claim	4,719
2023
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	$ 27,271
2017	36,819
2018	61,145
2019	73,310
2020	63,562
2021	96,134
2022	78,759
2023	78,978
Total	70,965
IBNR	$ 6,776
Cumulative Number of Reported Claims by Accident Year | claim	4,097
2024
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	$ 27,247
2017	37,268
2018	61,686
2019	74,363
2020	64,400
2021	96,771
2022	78,078
2023	72,025
2024	57,860
Total	56,848
IBNR	$ 9,194
Cumulative Number of Reported Claims by Accident Year | claim	3,133
2025
Liability for Claims and Claims Adjustment Expense [Line Items]
Total	$ 60,990
IBNR	$ 18,455
Cumulative Number of Reported Claims by Accident Year | claim	1,713