Property and Casualty Insurance Activity - Information relating to Incurred and Paid Claims (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) claim
Liability for Claims and Claims Adjustment Expense [Line Items]
Total	$ 593,216
2015
Liability for Claims and Claims Adjustment Expense [Line Items]
2015	22,340
IBNR	$ 290
Cumulative Number of Reported Claims by Accident Year | claim	2,560,000
2016
Liability for Claims and Claims Adjustment Expense [Line Items]
2015	$ 21,994
2016	26,062
IBNR	$ 79
Cumulative Number of Reported Claims by Accident Year | claim	2,883,000
2017
Liability for Claims and Claims Adjustment Expense [Line Items]
2015	$ 22,148
2016	24,941
2017	31,605
IBNR	$ 113
Cumulative Number of Reported Claims by Accident Year | claim	3,401,000
2018
Liability for Claims and Claims Adjustment Expense [Line Items]
2015	$ 22,491
2016	24,789
2017	32,169
2018	54,455
IBNR	$ 1,383
Cumulative Number of Reported Claims by Accident Year | claim	4,237,000
2019
Liability for Claims and Claims Adjustment Expense [Line Items]
2015	$ 23,386
2016	27,887
2017	35,304
2018	56,351
2019	75,092
IBNR	$ 1,832
Cumulative Number of Reported Claims by Accident Year | claim	4,508,000
2020
Liability for Claims and Claims Adjustment Expense [Line Items]
2015	$ 23,291
2016	27,966
2017	36,160
2018	58,441
2019	72,368
2020	63,083
IBNR	$ 1,312
Cumulative Number of Reported Claims by Accident Year | claim	5,894,000
2021
Liability for Claims and Claims Adjustment Expense [Line Items]
2015	$ 23,528
2016	27,417
2017	36,532
2018	59,404
2019	71,544
2020	62,833
2021	96,425
IBNR	$ 2,761
Cumulative Number of Reported Claims by Accident Year | claim	5,834,000
2022
Liability for Claims and Claims Adjustment Expense [Line Items]
2015	$ 23,533
2016	27,352
2017	36,502
2018	61,237
2019	71,964
2020	63,217
2021	96,673
2022	79,835
IBNR	$ 4,619
Cumulative Number of Reported Claims by Accident Year | claim	4,708,000
2023
Liability for Claims and Claims Adjustment Expense [Line Items]
2015	$ 23,428
2016	27,271
2017	36,819
2018	61,145
2019	73,310
2020	63,562
2021	96,134
2022	78,759
2023	78,978
IBNR	$ 9,668
Cumulative Number of Reported Claims by Accident Year | claim	4,084,000
2024
Liability for Claims and Claims Adjustment Expense [Line Items]
2015	$ 23,518
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
IBNR	$ 14,254
Cumulative Number of Reported Claims by Accident Year | claim	2,985,000