XML 78 R60.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Note 9 - Income Taxes Summary of Income Tax Examinations (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017 | Sep. 04, 2014 | May 31, 2010 | Jun. 30, 2008
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |
Income Tax Expense (Benefit) | $ (28,378) | $ (8,132) | $ (422) | $ 30,066 |  |  |  |
Income Tax Expense (Benefit) Recorded as a Result of Finalized IRS Settlement | (73,600) |  |  |  |  |  |  |
Qualified Deposit Assets With The U.S. Department Of Treasury Expected to be Submitted | 31,000 |  | 31,000 |  |  |  |  |
Deposit Assets | $ 88,557 |  | 88,557 |  | $ 88,557 |  |  |
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities |  |  | $ 88,600 |  |  |  |  |
Internal Revenue Service (IRS) [Member] |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |
Income Tax Examination, Amount of Claimed Income Tax Refund Being Disallowed for Tax Years 2006 and 2007 |  |  |  |  |  | $ 105,000 |  |
REMIC Residual [Member] | Internal Revenue Service (IRS) [Member] |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |
Qualified Deposit With The U.S. Department Of Treasury Relating to Tax Years 2000 Through 2004 |  |  |  |  |  |  |  | $ 85,000
Qualified Deposit With The U.S. Department Of Treasury Relating To Tax Years 2005 Through 2007 |  |  |  |  |  |  | $ 4,000 |
Income Tax Examination, Penalties Accrued |  |  |  |  |  | $ 157,000 |  |

X
- Definition This concept represents an amount identified in a Notice of Deficiency from the IRS related to an income tax examination where the use of a NOL carryback is being denied. + References No definition available. + Details
Name: | rdn_IncomeTaxExaminationAmountofClaimedIncomeTaxRefundBeingDisallowedforTaxYears2006and2007
Namespace Prefix: | rdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This concept represents the amount assessed by the IRS in the Notice of Deficiency related to unpaid taxes and penalties based on the outcome of an income tax examination. + References No definition available. + Details
Name: | rdn_IncomeTaxExaminationNoticeofDeficiencyAmountsRelatedtoUnpaidTaxesandPenalties
Namespace Prefix: | rdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Income Tax Expense (Benefit) Recorded as a Result of Finalized IRS Settlement + References No definition available. + Details
Name: | rdn_IncomeTaxExpenseBenefitRecordedasaResultofFinalizedIRSSettlement
Namespace Prefix: | rdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Qualified Deposit Assets With The U.S. Department Of Treasury Expected to be Submitted + References No definition available. + Details
Name: | rdn_QualifiedDepositAssetsWithTheU.S.DepartmentOfTreasuryExpectedtobeSubmitted
Namespace Prefix: | rdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This concept represents qualified deposits made with the United States Department of Treasury relating to proposed adjustments to the entity's tax losses and deductions based on examinations by the Internal Revenue Department. + References No definition available. + Details
Name: | rdn_QualifiedDepositWithUSDepartmentOfTreasuryRelatingToTaxYears2000Through2004
Namespace Prefix: | rdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Qualified Deposit With The U.S. Department Of Treasury Relating To Tax Years 2005 Through 2007 + References No definition available. + Details
Name: | rdn_QualifiedDepositWithUSDepartmentOfTreasuryRelatingToTaxYears2005Through2007
Namespace Prefix: | rdn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The carrying amount of the asset transferred to a third party to serve as a deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8,17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DepositAssets
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_IncomeTaxExaminationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_InternalRevenueServiceIRSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReasonablyPossibleSignificantChangeInUnrecognizedTaxBenefitsByItemAxis=rdn_REMICResidualMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |