XML 57 R47.htm IDEA: XBRL DOCUMENT
v3.23.1

Investments - Gross Unrealized Losses and Fair Value of Available for Sale Securities (Details) $ in Thousands | Mar. 31, 2023 USD ($) security | Dec. 31, 2022 USD ($) security
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 431 | 858
Fair value, less than 12 months | $ 1,748,558 | $ 3,463,314
Unrealized losses, less than 12 months | $ (75,311) | $ (312,320)
Number of securities, 12 months or greater | security | 805 | 426
Fair value, 12 months or greater | $ 2,965,575 | $ 1,434,379
Unrealized losses, 12 months or greater | $ (422,319) | $ (269,173)
Number of securities, total | security | 1,236 | 1,284
Fair value, total | $ 4,714,133 | $ 4,897,693
Unrealized losses, total | $ (497,630) | $ (581,493)
U.S. government and agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 7 | 14
Fair value, less than 12 months | $ 35,340 | $ 86,964
Unrealized losses, less than 12 months | $ (2,589) | $ (21,370)
Number of securities, 12 months or greater | security | 17 | 10
Fair value, 12 months or greater | $ 108,647 | $ 47,770
Unrealized losses, 12 months or greater | $ (21,780) | $ (7,532)
Number of securities, total | security | 24 | 24
Fair value, total | $ 143,987 | $ 134,734
Unrealized losses, total | $ (24,369) | $ (28,902)
State and municipal obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 24 | 43
Fair value, less than 12 months | $ 84,812 | $ 116,285
Unrealized losses, less than 12 months | $ (4,293) | $ (14,231)
Number of securities, 12 months or greater | security | 36 | 20
Fair value, 12 months or greater | $ 53,004 | $ 25,401
Unrealized losses, 12 months or greater | $ (12,178) | $ (7,708)
Number of securities, total | security | 60 | 63
Fair value, total | $ 137,816 | $ 141,686
Unrealized losses, total | $ (16,471) | $ (21,939)
Corporate bonds and notes |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 227 | 411
Fair value, less than 12 months | $ 980,939 | $ 1,769,547
Unrealized losses, less than 12 months | $ (46,110) | $ (176,768)
Number of securities, 12 months or greater | security | 362 | 203
Fair value, 12 months or greater | $ 1,418,761 | $ 701,936
Unrealized losses, 12 months or greater | $ (257,665) | $ (173,769)
Number of securities, total | security | 589 | 614
Fair value, total | $ 2,399,700 | $ 2,471,483
Unrealized losses, total | $ (303,775) | $ (350,537)
RMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 49 | 124
Fair value, less than 12 months | $ 319,516 | $ 610,812
Unrealized losses, less than 12 months | $ (10,804) | $ (46,117)
Number of securities, 12 months or greater | security | 132 | 59
Fair value, 12 months or greater | $ 500,482 | $ 261,370
Unrealized losses, 12 months or greater | $ (71,920) | $ (52,442)
Number of securities, total | security | 181 | 183
Fair value, total | $ 819,998 | $ 872,182
Unrealized losses, total | $ (82,724) | $ (98,559)
CMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 40 | 108
Fair value, less than 12 months | $ 134,349 | $ 469,100
Unrealized losses, less than 12 months | $ (6,053) | $ (38,178)
Number of securities, 12 months or greater | security | 120 | 55
Fair value, 12 months or greater | $ 452,445 | $ 121,277
Unrealized losses, 12 months or greater | $ (41,666) | $ (14,368)
Number of securities, total | security | 160 | 163
Fair value, total | $ 586,794 | $ 590,377
Unrealized losses, total | $ (47,719) | $ (52,546)
CLO |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 35 | 94
Fair value, less than 12 months | $ 93,096 | $ 246,705
Unrealized losses, less than 12 months | $ (4,139) | $ (10,271)
Number of securities, 12 months or greater | security | 111 | 61
Fair value, 12 months or greater | $ 383,681 | $ 245,584
Unrealized losses, 12 months or greater | $ (13,306) | $ (10,214)
Number of securities, total | security | 146 | 155
Fair value, total | $ 476,777 | $ 492,289
Unrealized losses, total | $ (17,445) | $ (20,485)
Other ABS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 47 | 61
Fair value, less than 12 months | $ 89,870 | $ 115,181
Unrealized losses, less than 12 months | $ (1,270) | $ (3,603)
Number of securities, 12 months or greater | security | 26 | 18
Fair value, 12 months or greater | $ 43,541 | $ 31,041
Unrealized losses, 12 months or greater | $ (3,697) | $ (3,140)
Number of securities, total | security | 73 | 79
Fair value, total | $ 133,411 | $ 146,222
Unrealized losses, total | $ (4,967) | $ (6,743)
Mortgage insurance-linked notes |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 2 | 2
Fair value, less than 12 months | $ 10,636 | $ 43,745
Unrealized losses, less than 12 months | $ (53) | $ (1,639)
Number of securities, 12 months or greater | security | 0 | 0
Fair value, 12 months or greater | $ 0 | $ 0
Unrealized losses, 12 months or greater | $ 0 | $ 0
Number of securities, total | security | 2 | 2
Fair value, total | $ 10,636 | $ 43,745
Unrealized losses, total | $ (53) | $ (1,639)
Foreign government and agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of securities, less than 12 months | security | 0 | 1
Fair value, less than 12 months | $ 0 | $ 4,975
Unrealized losses, less than 12 months | $ 0 | $ (143)
Number of securities, 12 months or greater | security | 1 | 0
Fair value, 12 months or greater | $ 5,014 | $ 0
Unrealized losses, 12 months or greater | $ (107) | $ 0
Number of securities, total | security | 1 | 1
Fair value, total | $ 5,014 | $ 4,975
Unrealized losses, total | $ (107) | $ (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_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=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: |