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Reinsurance - Excess of Loss Reinsurance (Details) - USD ($) $ in Thousands |  |  |  |  |  |  | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 26, 2022 | Aug. 03, 2021 | Feb. 02, 2021 | Oct. 29, 2020 | May 25, 2019 | Oct. 30, 2018 | Jun. 30, 2022 | Dec. 31, 2021
Home Re 2022-1 |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |
Term of mortgage insurance-linked notes | 12 years 6 months |  |  |  |  |  |  |
Initial first layer retention | $ 325,589 |  |  |  |  |  |  |
Remaining first layer retention |  |  |  |  |  |  | $ 325,589 |
Excess of loss reinsurance coverage, initial and remaining | $ 473,575 |  |  |  |  |  | 473,575 |
Home Re 2021-2 |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |
Term of mortgage insurance-linked notes |  | 12 years 6 months |  |  |  |  |  |
Initial first layer retention |  | $ 190,159 |  |  |  |  |  |
Remaining first layer retention |  |  |  |  |  |  | 190,159 | $ 190,159
Excess of loss reinsurance coverage, initial and remaining |  | $ 398,429 |  |  |  |  | 384,694 | 398,429
Home Re 2021-1 |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |
Term of mortgage insurance-linked notes |  |  | 12 years 6 months |  |  |  |  |
Initial first layer retention |  |  | $ 211,159 |  |  |  |  |
Remaining first layer retention |  |  |  |  |  |  | 211,142 | 211,142
Excess of loss reinsurance coverage, initial and remaining |  |  | $ 398,848 |  |  |  | 337,270 | 387,830
Home Re 2020-1 |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |
Term of mortgage insurance-linked notes |  |  |  | 10 years |  |  |  |
Initial first layer retention |  |  |  | $ 275,283 |  |  |  |
Remaining first layer retention |  |  |  |  |  |  | 275,169 | 275,204
Excess of loss reinsurance coverage, initial and remaining |  |  |  | $ 412,917 |  |  | 162,705 | 234,312
Home Re 2019-1 |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |
Term of mortgage insurance-linked notes |  |  |  |  | 10 years |  |  |
Initial first layer retention |  |  |  |  | $ 185,730 |  |  |
Remaining first layer retention |  |  |  |  |  |  | 183,789 | 183,917
Excess of loss reinsurance coverage, initial and remaining |  |  |  |  | $ 315,739 |  | 208,146 | 208,146
Home Re 2018-1 |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |
Term of mortgage insurance-linked notes |  |  |  |  |  | 10 years |  |
Initial first layer retention |  |  |  |  |  | $ 168,691 |  |
Remaining first layer retention |  |  |  |  |  |  | 165,075 | 165,365
Excess of loss reinsurance coverage, initial and remaining |  |  |  |  |  | $ 318,636 | $ 184,664 | $ 218,343

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- Definition Reinsurance Retention Policy, Excess of Loss Reinsurance Coverages + References No definition available. + Details
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- Definition Reinsurance Retention Policy, Initial Amount Retained + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition Amount per life of risk undertaken originally by insurer that is not ceded to reinsurer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 20 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=99397103&loc=d3e6811-158387 + Details
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