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Reinsurance - Narrative (Details) $ in Thousands		3 Months Ended		6 Months Ended
Reinsurance - Narrative (Details) $ in Thousands	Oct. 26, 2021 USD ($)	Jun. 30, 2026 USD ($) reinsuranceAgreement quota_share_agreement	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) reinsuranceAgreement quota_share_agreement	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Ceded Credit Risk [Line Items]
Number of quota share reinsurance treaties \| quota_share_agreement		9		9
Reinsurance recoverable on unpaid claims		$ 40,434	$ 32,705	$ 40,434	$ 32,705	$ 38,577	$ 32,260
Number of excess-of-loss reinsurance agreements \| reinsuranceAgreement		9		9
Reinsurance coverage amount		$ 11,200	10,400	$ 22,200	20,500
Reinsurance coverage amount amortized (in percent)		10.00%		10.00%
2026-3 XOL Transaction
Ceded Credit Risk [Line Items]
Reinsurance retention policy excess of loss reinsurance coverages				$ 160,000
2027 XOL Transaction
Ceded Credit Risk [Line Items]
Reinsurance retention policy excess of loss reinsurance coverages				$ 125,000
Minimum
Ceded Credit Risk [Line Items]
Reinsurance coverage, term of underlying mortgage amortization (in years)				10 years
Maximum
Ceded Credit Risk [Line Items]
Reinsurance coverage, term of underlying mortgage amortization (in years)				12 years 6 months
Reinsurance Policy, Type [Axis]: 2022-1 XOL Transaction
Ceded Credit Risk [Line Items]
Initial First Layer Retained Loss		$ 133,366		$ 133,366
Initial Reinsurance Coverage		289,741		289,741
Current Reinsurance Coverage		125,849		125,849
Current First Layer Retained Loss		127,071		127,071
Reinsurance Policy, Type [Axis]: 2022-2 XOL Transaction
Ceded Credit Risk [Line Items]
Initial First Layer Retained Loss		78,906		78,906
Initial Reinsurance Coverage		154,306		154,306
Current Reinsurance Coverage		102,346		102,346
Current First Layer Retained Loss		70,282		70,282
Reinsurance Policy, Type [Axis]: 2022-3 XOL Transaction
Ceded Credit Risk [Line Items]
Initial First Layer Retained Loss		106,265		106,265
Initial Reinsurance Coverage		96,779		96,779
Current Reinsurance Coverage		67,726		67,726
Current First Layer Retained Loss		98,355		98,355
Reinsurance Policy, Type [Axis]: 2023-1 XOL Transaction
Ceded Credit Risk [Line Items]
Initial First Layer Retained Loss		146,513		146,513
Initial Reinsurance Coverage		89,864		89,864
Current Reinsurance Coverage		53,594		53,594
Current First Layer Retained Loss		139,186		139,186
Reinsurance Policy, Type [Axis]: 2023-2 XOL Transaction
Ceded Credit Risk [Line Items]
Initial First Layer Retained Loss		136,875		136,875
Initial Reinsurance Coverage		100,777		100,777
Current Reinsurance Coverage		52,089		52,089
Current First Layer Retained Loss		133,319		133,319
Reinsurance Policy, Type [Axis]: 2024 XOL Transaction
Ceded Credit Risk [Line Items]
Initial First Layer Retained Loss		312,172		312,172
Initial Reinsurance Coverage		162,500		162,500
Current Reinsurance Coverage		127,186		127,186
Current First Layer Retained Loss		309,628		309,628
Reinsurance Policy, Type [Axis]: 2025 XOL Transaction
Ceded Credit Risk [Line Items]
Initial First Layer Retained Loss		321,331		321,331
Initial Reinsurance Coverage		283,849		283,849
Current Reinsurance Coverage		265,838		265,838
Current First Layer Retained Loss		321,279		321,279
Reinsurance Policy, Type [Axis]: 2026-1 XOL Transaction
Ceded Credit Risk [Line Items]
Initial First Layer Retained Loss		183,282		183,282
Initial Reinsurance Coverage		98,359		98,359
Current Reinsurance Coverage		98,359		98,359
Current First Layer Retained Loss		183,282		183,282
Reinsurance Policy, Type [Axis]: 2026-2 XOL Transaction
Ceded Credit Risk [Line Items]
Initial First Layer Retained Loss		17,042		17,042
Initial Reinsurance Coverage		148,109		148,109
Current Reinsurance Coverage		140,691		140,691
Current First Layer Retained Loss		17,042		17,042
Reinsurance Policy, Type [Axis]: Oaktown Re
Ceded Credit Risk [Line Items]
Reinsurance coverage, term of underlying mortgage amortization (in years)	12 years 6 months
Initial First Layer Retained Loss	$ 146,200
Initial Reinsurance Coverage	$ 363,600
Current Reinsurance Coverage		149,000		149,000
Current First Layer Retained Loss		142,500		142,500
Reinsurance Policy, Type [Axis]: QSR Transactions
Ceded Credit Risk [Line Items]
Reinsurance recoverable on unpaid claims		40,400		$ 40,400		$ 38,600
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: 2018 QSR Transaction, Period 1
Ceded Credit Risk [Line Items]
Premiums earned, percent of risk				16.00%
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: 2018 QSR Transaction, Period 2
Ceded Credit Risk [Line Items]
Premiums earned, percent of risk				13.00%
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: 2020 QSR Transaction
Ceded Credit Risk [Line Items]
Premiums earned, percent of risk				21.00%
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: 2021 QSR Transaction
Ceded Credit Risk [Line Items]
Premiums earned, percent of risk				20.00%
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: 2022 QSR Transaction
Ceded Credit Risk [Line Items]
Premiums earned, percent of risk				20.00%
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: 2022 Seasoned QSR Transaction
Ceded Credit Risk [Line Items]
Premiums earned, percent of risk				48.00%
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: 2023 QSR Transaction
Ceded Credit Risk [Line Items]
Premiums earned, percent of risk				20.00%
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: 2024 QSR Transaction
Ceded Credit Risk [Line Items]
Premiums earned, percent of risk				20.00%
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: 2025 QSR Transaction
Ceded Credit Risk [Line Items]
Premiums earned, percent of risk				20.00%
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: 2026 QSR Transactions
Ceded Credit Risk [Line Items]
Premiums earned, percent of risk				25.00%
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: 2027 QSR Transactions
Ceded Credit Risk [Line Items]
Premiums earned, percent of risk				35.00%
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: 2028 QSR Transactions
Ceded Credit Risk [Line Items]
Premiums earned, percent of risk				25.00%
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: Oaktown Re
Ceded Credit Risk [Line Items]
Risk premiums paid		$ 1,500	$ 3,200	$ 3,900	$ 6,600
Third-party Reinsurers \| Reinsurance Policy, Type [Axis]: Oaktown Re \| Maximum
Ceded Credit Risk [Line Items]
Anticipated payment related to annual operating expenses				$ 250