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Note 16 - Statutory Information - Statutory Capital Requirements (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) state payment | Dec. 31, 2019
Risk to Capital Line Items [Line Items] |  |
Risk To Capital Ratio, Regulatory Maximum | 25 |
PMIERS Disaster Related Capital Charge | 30.00% |
Reduction in Capital Charges | 70.00% |
Radian Guaranty |  |
Risk to Capital Line Items [Line Items] |  |
Risk-to-capital | 12.7 | 13.6
Minimum | Mortgage segment |  |
Risk to Capital Line Items [Line Items] |  |
Number of missed payments | payment | 2 |
Maximum |  |
Risk to Capital Line Items [Line Items] |  |
Number of Months that Disaster Related Capital Charge is Applied. | 3 months |
State Insurance Regulations |  |
Risk to Capital Line Items [Line Items] |  |
Number Of States That Have A Statutory Or Regulatory Risk Based Capital Requirement | state | 16 |
Non RBC States | Minimum |  |
Risk to Capital Line Items [Line Items] |  |
Capital Required for Capital Adequacy | $ 1 |
Non RBC States | Maximum |  |
Risk to Capital Line Items [Line Items] |  |
Capital Required for Capital Adequacy | $ 5 |

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- Definition This concept represents an entity's ratio of net risk in force (excludes risk ceded through reinsurance contracts and risk in force on defaulted loans) to the amount of statutory capital (defined as the sum of statutory policyholders' surplus plus statutory contingency reserves). + References No definition available. + Details
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- Definition This concept represents the maximum ratio of net risk in force (net of risk ceded through reinsurance contracts and risk in force on defaulted loans) to statutory capital (defined as the sum of statutory policyholders' surplus plus statutory contingency reserves) allowed in those states which have statutory risk-based capital requirements. + References No definition available. + Details
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- Definition Amount of minimum total risk-based capital required for capital adequacy as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826 + Details
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