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v3.23.3

Segment Reporting - Services Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Segment Reporting Information [Line Items] |  |  |  |
Total services revenue | $ 10,892 | $ 20,146 | $ 33,673 | $ 76,775
Valuation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total services revenue | 4,024 | 7,634 | 12,141 | 26,687
Single family rental |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total services revenue | 1,529 | 5,430 | 5,583 | 20,887
Asset management technology platform |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total services revenue | 1,199 | 1,134 | 3,574 | 3,740
Real estate owned asset management |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total services revenue | 887 | 750 | 2,687 | 2,302
Other real estate services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total services revenue | 26 | 78 | 27 | 83
Title |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total services revenue | 2,964 | 4,714 | 8,751 | 16,012
Real estate technology services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total services revenue | (3) | 2 | 24 | 2
Mortgage |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total services revenue | $ 266 | $ 404 | $ 886 | $ 7,062

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- Definition The total net amount of mortgage and real estate services revenue from our Services segment. + References No definition available. + Details
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Namespace Prefix: | rdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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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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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | rdn_ServicesRevenueAxis=rdn_SingleFamilyRentalMember
Namespace Prefix: |
Data Type: | na
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Period Type: |

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- Details
Name: | rdn_ServicesRevenueAxis=rdn_AssetmanagementservicesMember
Namespace Prefix: |
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Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
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- Details
Name: | rdn_ServicesRevenueAxis=rdn_RealEstateAgentServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | rdn_ServicesRevenueAxis=rdn_TitleServicesMember
Namespace Prefix: |
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- Details
Name: | rdn_ServicesRevenueAxis=rdn_RealEstateTechnologyServicesMember
Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |