Reinsurance (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Reinsurance Retention Policy
Flood premiums ceded (percentage)			100.00%
Insurance commissions and fees under Flood Program	$ 394	$ 408	$ 1,034	$ 1,194

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