XML 83 R64.htm IDEA: XBRL DOCUMENT
v3.22.4

Investments - Gross Unrealized Losses and Related Fair Values of Available for Sale Securities (Details) $ in Thousands | Dec. 31, 2022 USD ($) security | Dec. 31, 2021 USD ($) security
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 858 | 519
Fair value, less than 12 months | $ 3,463,314 | $ 2,004,842
Unrealized losses, less than 12 months | $ (312,320) | $ (28,445)
Number of securities, 12 months or greater | security | 426 | 60
Fair value, 12 months or greater | $ 1,434,379 | $ 166,248
Unrealized losses, 12 months or greater | $ (269,173) | $ (9,593)
Number of securities, total | security | 1,284 | 579
Fair value, total | $ 4,897,693 | $ 2,171,090
Unrealized losses, total | $ (581,493) | $ (38,038)
U.S. government and agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 14 | 14
Fair value, less than 12 months | $ 86,964 | $ 101,602
Unrealized losses, less than 12 months | $ (21,370) | $ (1,165)
Number of securities, 12 months or greater | security | 10 | 2
Fair value, 12 months or greater | $ 47,770 | $ 6,937
Unrealized losses, 12 months or greater | $ (7,532) | $ (231)
Number of securities, total | security | 24 | 16
Fair value, total | $ 134,734 | $ 108,539
Unrealized losses, total | $ (28,902) | $ (1,396)
State and municipal obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 43 | 20
Fair value, less than 12 months | $ 116,285 | $ 32,721
Unrealized losses, less than 12 months | $ (14,231) | $ (401)
Number of securities, 12 months or greater | security | 20 | 0
Fair value, 12 months or greater | $ 25,401 | $ 0
Unrealized losses, 12 months or greater | $ (7,708) | $ 0
Number of securities, total | security | 63 | 20
Fair value, total | $ 141,686 | $ 32,721
Unrealized losses, total | $ (21,939) | $ (401)
Corporate bonds and notes |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 411 | 209
Fair value, less than 12 months | $ 1,769,547 | $ 864,355
Unrealized losses, less than 12 months | $ (176,768) | $ (16,799)
Number of securities, 12 months or greater | security | 203 | 34
Fair value, 12 months or greater | $ 701,936 | $ 99,475
Unrealized losses, 12 months or greater | $ (173,769) | $ (8,087)
Number of securities, total | security | 614 | 243
Fair value, total | $ 2,471,483 | $ 963,830
Unrealized losses, total | $ (350,537) | $ (24,886)
RMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 124 | 57
Fair value, less than 12 months | $ 610,812 | $ 365,476
Unrealized losses, less than 12 months | $ (46,117) | $ (6,749)
Number of securities, 12 months or greater | security | 59 | 3
Fair value, 12 months or greater | $ 261,370 | $ 1,543
Unrealized losses, 12 months or greater | $ (52,442) | $ (28)
Number of securities, total | security | 183 | 60
Fair value, total | $ 872,182 | $ 367,019
Unrealized losses, total | $ (98,559) | $ (6,777)
CMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 108 | 81
Fair value, less than 12 months | $ 469,100 | $ 188,457
Unrealized losses, less than 12 months | $ (38,178) | $ (2,053)
Number of securities, 12 months or greater | security | 55 | 9
Fair value, 12 months or greater | $ 121,277 | $ 22,050
Unrealized losses, 12 months or greater | $ (14,368) | $ (1,015)
Number of securities, total | security | 163 | 90
Fair value, total | $ 590,377 | $ 210,507
Unrealized losses, total | $ (52,546) | $ (3,068)
CLO |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 94 | 84
Fair value, less than 12 months | $ 246,705 | $ 313,380
Unrealized losses, less than 12 months | $ (10,271) | $ (675)
Number of securities, 12 months or greater | security | 61 | 11
Fair value, 12 months or greater | $ 245,584 | $ 35,612
Unrealized losses, 12 months or greater | $ (10,214) | $ (223)
Number of securities, total | security | 155 | 95
Fair value, total | $ 492,289 | $ 348,992
Unrealized losses, total | $ (20,485) | $ (898)
Other ABS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 61 | 54
Fair value, less than 12 months | $ 115,181 | $ 138,851
Unrealized losses, less than 12 months | $ (3,603) | $ (603)
Number of securities, 12 months or greater | security | 18 | 1
Fair value, 12 months or greater | $ 31,041 | $ 631
Unrealized losses, 12 months or greater | $ (3,140) | $ (9)
Number of securities, total | security | 79 | 55
Fair value, total | $ 146,222 | $ 139,482
Unrealized losses, total | $ (6,743) | $ (612)
Mortgage insurance-linked notes |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 2 |
Fair value, less than 12 months | $ 43,745 |
Unrealized losses, less than 12 months | $ (1,639) |
Number of securities, 12 months or greater | security | 0 |
Fair value, 12 months or greater | $ 0 |
Unrealized losses, 12 months or greater | $ 0 |
Number of securities, total | security | 2 |
Fair value, total | $ 43,745 |
Unrealized losses, total | $ (1,639) |
Foreign government and agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 1 |
Fair value, less than 12 months | $ 4,975 |
Unrealized losses, less than 12 months | $ (143) |
Number of securities, 12 months or greater | security | 0 |
Fair value, 12 months or greater | $ 0 |
Unrealized losses, 12 months or greater | $ 0 |
Number of securities, total | security | 1 |
Fair value, total | $ 4,975 |
Unrealized losses, total | $ (143) |

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), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without an allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
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), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without an allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
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), in unrealized loss position without allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b)(3) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
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
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
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=rdn_MortgageInsuranceLinkedNotesMember
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: |