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Note 14 - Statutory Information Statutory Information (Details) $ in Thousands | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2015 USD ($) | Dec. 31, 2015 USD ($) years | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2016 USD ($) | Jul. 31, 2014 USD ($)
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Restricted Cash and Cash Equivalents | $ 2,900,000 | $ 2,900,000 |  |  |  |
Differences Between GAAP Basis and STAT Basis [Member] |  |  |  |  |  |
STAT Accounting Information [Abstract] |  |  |  |  |  |
Mortgage Guaranty Insurance Companies Are Required Each Year To Establish A Contingency Reserve Equal To This Percentage Of Premiums Earned In Such Year |  | 50.00% |  |  |  |
Number Of Years A Fifty Percent Contingency Reserve Is Required To Be Maintained | years |  | 10 |  |  |  |
Mortgage Guaranty Insurance Companies Contingency Reserve May Be Reduced With Regulatory Approval To The Extent That Losses In Any Calendar Year Exceed This Percentage Of Earned Premiums For Such Year |  | 35.00% |  |  |  |
PENNSYLVANIA |  |  |  |  |  |
Additional Risk And Capital Information |  |  |  |  |  |
Policyholder Dividends, Rate on Policy Earnings |  | 10.00% |  |  |  |
Radian Guaranty [Member] |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Surplus Notes | 325,000 | $ 325,000 |  |  |  |
Statutory Unassigned Negative Surplus | 679,900 | 679,900 | $ 715,700 |  |  |
Statutory contingency reserve | 860,900 | 860,900 | 389,400 | $ 23,000 |  |
STAT Accounting Information [Abstract] |  |  |  |  |  |
Statutory Accounting Practices, Statutory Net Income Amount |  | 754,800 | 273,700 | (23,800) |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 1,686,500 | 1,686,500 | 1,325,200 | 1,317,800 |  |
Proceeds from Contributions from Parent |  | 100,000 | 100,000 | 230,400 |  |
Radian Guaranty [Member] | Scenario, Forecast [Member] |  |  |  |  |  |
STAT Accounting Information [Abstract] |  |  |  |  |  |
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments |  |  |  |  | $ 0 |
Radian Reinsurance [Member] |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory Unassigned Negative Surplus | 127,300 | 127,300 |  |  |  |
Statutory contingency reserve | 128,800 | 128,800 |  |  |  |
STAT Accounting Information [Abstract] |  |  |  |  |  |
Statutory Accounting Practices, Statutory Net Income Amount |  | (1,000) |  |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 138,700 | 138,700 |  |  |  |
Proceeds from Contributions from Parent |  | 50,000 |  |  |  |
Radian Reinsurance [Member] | Scenario, Forecast [Member] |  |  |  |  |  |
STAT Accounting Information [Abstract] |  |  |  |  |  |
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments |  |  |  |  | $ 0 |
Radian Mortgage Guaranty Inc. [Member] |  |  |  |  |  |
Additional Risk And Capital Information |  |  |  |  |  |
Required statutory surplus | 20,000 | 20,000 |  |  |  |
Other MI Companies [Member] |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory contingency reserve | 1,100 | 1,100 | 140,700 | 80,900 |  |
STAT Accounting Information [Abstract] |  |  |  |  |  |
Statutory Accounting Practices, Statutory Net Income Amount |  | 92,900 | 112,900 | 99,600 |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | 55,000 | 55,000 | $ 473,700 | $ 406,100 |  |
Radian Guaranty Reinsurance Inc [Member] |  |  |  |  |  |
Additional Risk And Capital Information |  |  |  |  |  |
Required statutory surplus | 20,000 | 20,000 |  |  |  |
Radian Insurance [Member] |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Risk In Force | 48,500 | 48,500 |  |  |  |
Radian Investor Surety Inc. [Member] |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures |  |  |  |  |  | $ 20,000
Cash Dividends Paid to Parent Company | 15,000 |  |  |  |  |
Risk In Force | 0 | 0 |  |  |  |
STAT Accounting Information [Abstract] |  |  |  |  |  |
Statutory Accounting Practices, Statutory Capital and Surplus, Balance | $ 5,000 | $ 5,000 |  |  |  |

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- Definition Mortgage Guaranty Insurance Companies Are Required Each Year To Establish A Contingency Reserve Equal To This Percentage Of Premiums Earned In Such Year + References No definition available. + Details
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- Definition This element represents disclosure of the total aggregate cash dividends paid to the entity by consolidated subsidiaries, by unconsolidated subsidiaries, and by 50% or less owned persons accounted for using the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.9-06) -URI http://asc.fasb.org/extlink&oid=6882215&loc=d3e537971-122884 + Details
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- Definition Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. + 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 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The percentage of earnings allocable to participating policyholders based on earnings of such policies for payment of dividends. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.6) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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- Definition The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.23(c)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 24 -Subparagraph c -Article 7 + Details
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- Definition Financial instruments issued by insurance entities (surplus notes) that are includable in surplus for statutory accounting purposes as prescribed or permitted by state laws and regulations that are liabilities of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486086&loc=d3e24387-158525 + Details
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