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Insurance Company WNFIC - Additional Information (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) Reinsurer | Dec. 31, 2019 USD ($) | Sep. 30, 2020
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] |  |  |
Ceded rate of premiums under insurance program | 100.00% |  |
Premiums written net | $ 728,093 | $ 697,059 |
Ceded unpaid loss | 43,500 | 58,500 |
Prepaid reinsurance premiums | 377,615 | 366,021 |
Increase (decrease) in loss and loss adjustment expense reserve | 0 | 0 |
Reserve for losses and loss adjustment expense | $ 43,500 | 58,500 |
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 | 30.00% |  | 30.10%
Premiums written net | $ 725,800 | 694,900 |
Statutory capital and surplus required | 7,500 |  |
Statutory capital and surplus | 32,600 | 29,600 |
Statutory net Income | $ 800 | $ 8,100 |
Preferred stock, dividend rate, percentage | 100.00% |  |
Maximum dividend payout that may be made without prior approval | $ 3,300 |  |
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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