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Insurance Company WNFIC - Additional Information (Details) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 USD ($) Reinsurer | Dec. 31, 2019 USD ($)
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] |  |
Ceded rate of premiums under insurance program | 100.00% |
Premiums written net | $ 565,135 |
Ceded unpaid loss | 107,500 |
Prepaid reinsurance premiums | 397,615 | $ 366,021
Increase (decrease) in loss and loss adjustment expense reserve | 0 |
Reserve for losses and loss adjustment expense | $ 107,500 |
Number of reinsurers | Reinsurer | 2 |
Wright National Flood Insurance Company |  |
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] |  |
Ceded rate of premiums under insurance program | 100.00% |
Expenses and allowance rate received in premiums | 30.10% |
Premiums written net | $ 563,500 |
Statutory capital and surplus required | 7,500 |
Statutory capital and surplus | 31,900 | 29,600
Statutory net Income | $ 700 | $ 8,100
Preferred stock, dividend rate, percentage | 100.00% |
Maximum dividend payout that may be made without prior approval | $ 8,100 |
Wright National Flood Insurance Company | Maximum |  |
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] |  |
Preferred stock, dividend rate, percentage | 10.00% |

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