XML 80 R66.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Losses and LAE - Reserve for Losses and LAE by Segment (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023 | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | --- | --- | ---
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |
Total reserve for losses and LAE | $ 357,470 | $ 370,148 |  |
Mortgage insurance |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |
Total reserve for losses and LAE | 351,207 | 364,923 | $ 373,681 | $ 420,955
Title insurance |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |
Total reserve for losses and LAE | 6,263 | 5,225 |  |
Primary case | Mortgage insurance |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |
Total reserve for losses and LAE | 331,959 | 344,235 |  |
Primary IBNR and LAE | Mortgage insurance |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |
Total reserve for losses and LAE | 11,754 | 12,177 |  |
Pool and other | Mortgage insurance |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |
Total reserve for losses and LAE | $ 7,494 | $ 8,511 |  |

X
- Definition The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-7 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (cc) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-3 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(13)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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
Name: | us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpenseLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=rdn_MortgageInsuranceSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=rdn_TitleInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | rdn_LossReservesAxis=rdn_PrimaryCaseReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | rdn_LossReservesAxis=rdn_PrimaryIBNRAndLAEMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | rdn_LossReservesAxis=rdn_PoolAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |