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Reinsurance (Ceded Premiums and Losses Related to Flood Operations) (Details) - National Flood Insurance Program [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Percentage of NFIP claims ceded by federal government	100.00%
Ceded premiums written	$ (60,889)	$ (65,742)
Ceded premiums earned	(69,268)	(67,519)
Ceded loss and loss expenses incurred	$ (2,417)	$ (2,207)

X

- Definition

Percentage of unpaid NFIP claims ceded to federal government.

+ References

No definition available.

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- Definition

Amount of earned premiums ceded to other entities.

+ References

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Amount of written premiums ceded to other entities.

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Amount of reduction of provision for policy benefits and costs incurred for policies ceded.

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