XML 61 R47.htm IDEA: XBRL DOCUMENT
v3.22.2

Investments - Available for Sale Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Less: loaned securities | $ 79,073 | $ 103,996
Total fixed-maturities available for sale | 5,643,884 | 5,367,729
Total fixed-maturities available for sale | 5,228,744 | 5,517,078
Fixed-maturities available for sale | U.S. government and agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 198,819 | 221,407
Gross Unrealized Gains | 35 | 1,719
Gross Unrealized Losses | (18,350) | (1,396)
Fair Value | 180,504 | 221,730
Fixed-maturities available for sale | State and municipal obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 166,024 | 162,964
Gross Unrealized Gains | 1,006 | 14,694
Gross Unrealized Losses | (12,050) | (401)
Fair Value | 154,980 | 177,257
Fixed-maturities available for sale | Corporate bonds and notes |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 3,042,032 | 2,867,063
Gross Unrealized Gains | 1,838 | 133,665
Gross Unrealized Losses | (271,736) | (24,886)
Fair Value | 2,772,134 | 2,975,842
Fixed-maturities available for sale | RMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 840,157 | 697,581
Gross Unrealized Gains | 146 | 14,313
Gross Unrealized Losses | (63,917) | (6,777)
Fair Value | 776,386 | 705,117
Fixed-maturities available for sale | CMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 649,521 | 690,827
Gross Unrealized Gains | 89 | 21,444
Gross Unrealized Losses | (31,007) | (3,068)
Fair Value | 618,603 | 709,203
Fixed-maturities available for sale | CLO |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 520,479 | 529,906
Gross Unrealized Gains | 0 | 1,032
Gross Unrealized Losses | (17,665) | (898)
Fair Value | 502,814 | 530,040
Fixed-maturities available for sale | Other ABS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 184,182 | 210,657
Gross Unrealized Gains | 42 | 1,142
Gross Unrealized Losses | (4,202) | (612)
Fair Value | 180,022 | 211,187
Fixed-maturities available for sale | Foreign government and agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 5,113 | 5,109
Gross Unrealized Gains | 0 | 187
Gross Unrealized Losses | (64) | 0
Fair Value | 5,049 | 5,296
Fixed-maturities available for sale | Mortgage insurance-linked notes |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 53,685 | 45,384
Gross Unrealized Gains | 0 | 1,633
Gross Unrealized Losses | (1,085) | 0
Fair Value | 52,600 | 47,017
Fixed-maturities available for sale | Total fixed-maturities available for sale |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 5,660,012 | 5,430,898
Total fixed-maturities available for sale | 5,643,884 | 5,367,729
Gross Unrealized Gains | 3,156 | 189,829
Gross Unrealized Losses | (420,076) | (38,038)
Fair Value | 5,243,092 | 5,582,689
Total fixed-maturities available for sale | 5,228,744 | 5,517,078
Fixed-maturities available for sale | Loaned securities, amortized cost | Total fixed-maturities available for sale |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less: loaned securities | 16,128 | 63,169
Fixed-maturities available for sale | Loaned securities, fair value | Total fixed-maturities available for sale |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less: loaned securities | $ 14,348 | $ 65,611

X
- Definition Available-for-sale Debt Securities, Amortized Cost Basis, Including Loaned Securities + References No definition available. + Details
Name: | rdn_AvailableforsaleDebtSecuritiesAmortizedCostBasisIncludingLoanedSecurities
Namespace Prefix: | rdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Available-for-sale Securities, Debt Securities, Including Loaned Securities + References No definition available. + Details
Name: | rdn_AvailableforsaleSecuritiesDebtSecuritiesIncludingLoanedSecurities
Namespace Prefix: | rdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of asset associated with securities loaned to entities in exchange for collateral. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226003-175313 + Details
Name: | us-gaap_SecuritiesLoanedAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_FixedMaturitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ResidentialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CollateralizedLoanObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ForeignGovernmentDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=rdn_MortgageInsuranceLinkedNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SecuritiesFinancingTransactionAxis=us-gaap_SecuritiesFinancingTransactionCostMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SecuritiesFinancingTransactionAxis=us-gaap_SecuritiesFinancingTransactionFairValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |