Property and Casualty Insurance Activity - Cumulative Paid Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance (Details) $ in Thousands	Mar. 31, 2025 USD ($)
Liability for Claims and Claims Adjustment Expense [Line Items]
Total	$ 500,783
Net liability for unpaid loss and allocated loss adjustment expenses for the accident years presented	93,725
All outstanding liabilities before 2016, net of reinsurance	1,683
Liabilities for loss and allocated loss adjustment expenses, net of reinsurance	95,408
2016
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	15,364
2017
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	19,001
2017	16,704
2018
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	21,106
2017	24,820
2018	32,383
2019
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	23,974
2017	28,693
2018	44,516
2019	40,933
2020
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	25,234
2017	31,393
2018	50,553
2019	54,897
2020	39,045
2021
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	25,750
2017	32,529
2018	52,025
2019	58,055
2020	50,719
2021	56,282
2022
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	26,382
2017	33,522
2018	54,424
2019	60,374
2020	53,432
2021	77,756
2022	45,856
2023
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	26,854
2017	34,683
2018	56,199
2019	63,932
2020	56,523
2021	82,317
2022	65,732
2023	46,280
2024
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	26,808
2017	35,046
2018	57,185
2019	66,109
2020	59,220
2021	85,314
2022	68,170
2023	56,952
2024	29,013
2025
Liability for Claims and Claims Adjustment Expense [Line Items]
2016	26,816
2017	35,229
2018	57,492
2019	67,507
2020	59,544
2021	86,548
2022	69,119
2023	57,894
2024	36,168
2025	$ 4,466