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Reinsurance Recoverable Credit Ratings (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Reinsurance Recoverable, Credit Quality Indicator, Date Updated	Mar. 31, 2021
Reinsurance recoverable	$ 582,696	$ 589,269
Reinsurance Recoverable, Allowance for Credit Loss	(1,840)	(1,777)	$ (1,502)	$ (4,400)
Reinsurance recoverable, net of allowance for credit losses	580,856	587,492
AM Best, A++ Rating [Member]
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Reinsurance Recoverables, Gross	38,047	37,566
Reinsurance Recoverable, Current	37,939	37,464
Reinsurance Recoverable, Past Due	108	102
AM Best, A+ Rating [Member]
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Reinsurance Recoverables, Gross	356,418	357,298
Reinsurance Recoverable, Current	352,386	354,846
Reinsurance Recoverable, Past Due	4,032	2,452
AM Best, A Rating [Member]
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Reinsurance Recoverables, Gross	105,455	106,067
Reinsurance Recoverable, Current	105,068	105,652
Reinsurance Recoverable, Past Due	387	415
AM Best, A- Rating [Member]
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Reinsurance Recoverables, Gross	2,177	2,139
Reinsurance Recoverable, Current	2,177	2,139
Reinsurance Recoverable, Past Due	0	0
AM Best, B++ Rating [Member]
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Reinsurance Recoverables, Gross	381	380
Reinsurance Recoverable, Current	117	56
Reinsurance Recoverable, Past Due	264	324
AM Best, B+ Rating [Member]
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Reinsurance Recoverables, Gross	0	0
Reinsurance Recoverable, Current	0	0
Reinsurance Recoverable, Past Due	0	0
AM Best Rated Reinsurer [Member]
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Reinsurance Recoverables, Gross	502,478	503,450
Reinsurance Recoverable, Current	497,687	500,157
Reinsurance Recoverable, Past Due	4,791	3,293
Total federal and state pools [Member]
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Reinsurance Recoverables, Gross	76,179	82,575
Reinsurance Recoverable, Current	76,179	82,575
Reinsurance Recoverable, Past Due	0	0
Other than Federal And State Pools [Member]
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Reinsurance Recoverables, Gross	4,039	3,244
Reinsurance Recoverable, Current	3,179	2,676
Reinsurance Recoverable, Past Due	860	568
Total Non Rated Reinsurer [Member]
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Reinsurance Recoverables, Gross	80,218	85,819
Reinsurance Recoverable, Current	79,358	85,251
Reinsurance Recoverable, Past Due	860	568
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments, Gross [Member]
Reinsurance Recoverable, Credit Quality Indicator [Line Items]
Reinsurance Recoverable, Current	577,045	585,408
Reinsurance Recoverable, Past Due	$ 5,651	$ 3,861

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- Definition

Date of last update of credit quality indicator for reinsurance recoverable, in CCYY-MM-DD format.

+ References

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-Publisher FASB
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Amount of reinsurance recoverable, not past due.

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Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid 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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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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Amount before valuation allowance of reinsurance recoverables for losses reported to the ceding insurer but not yet paid, and for amounts expected based upon statistical projections and other measures of incurred losses and loss settlement expenses which have not yet been reported to the ceding insurer.

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