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Amount of allowance for credit loss on reinsurance recoverable.

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Amount before valuation allowance recoverable under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves.

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Reinsurance - Schedule of Disaggregation of Reinsurance Recoverable by Financial Strength Rating and Aging Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Jun. 30, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	$ 1,128,348		$ 917,495
Less: allowance for credit losses	(2,000)	$ (2,000)	(2,000)	$ (2,000)	$ (2,000)	$ (2,000)
Total reinsurance recoverable, net	1,126,348		915,495
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments, Gross \| Current
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	1,124,534		909,109
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments, Gross \| Past Due
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	3,814		8,386
Total non-rated reinsurers
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	96,523		95,245
Total non-rated reinsurers \| Current
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	96,475		95,184
Total non-rated reinsurers \| Past Due
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	48		61
Federal and state pools
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	94,832		82,322
Federal and state pools \| Current
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	94,832		82,322
Federal and state pools \| Past Due
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	0		0
Other than federal and state pools
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	1,691		12,923
Other than federal and state pools \| Current
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	1,643		12,862
Other than federal and state pools \| Past Due
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	48		61
Total rated reinsurers
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	1,031,825		822,250
Total rated reinsurers \| Current
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	1,028,059		813,925
Total rated reinsurers \| Past Due
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	3,766		8,325
A++
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	180,785		154,956
A++ \| Current
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	180,507		153,275
A++ \| Past Due
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	278		1,681
A+
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	679,464		534,583
A+ \| Current
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	676,773		529,027
A+ \| Past Due
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	2,691		5,556
A
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	171,413		131,431
A \| Current
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	170,725		130,457
A \| Past Due
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	688		974
A-
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	163		1,280
A- \| Current
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	54		1,166
A- \| Past Due
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Total reinsurance recoverable, gross	$ 109		$ 114