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Reinsurance (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Reinsurance Retention Policy
Amount of risk reinsured in excess of stated retention	$ 2,900,000
Flood premiums ceded (percentage)			100.00%
Insurance commissions and fees under Flood Program	$ 608	$ 431	$ 890	$ 764
Document Period End Date			Jun. 30, 2021
Ceded losses - All Other Perils Contract			$ 101,667
Reinstatement Premium - All Other Perils			$ 15,061

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Ceded losses - All Other Perils Contract

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Insurance Commissions and Fees, Flood Program

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Percentage of Flood Premiums Ceded

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Reinstatement Premium - All Other Perils

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Amount of risk reinsured in excess of stated retention per company policy.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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