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Note 16 - Statutory Information Level 3 (Tables) | 12 Months Ended
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Dec. 31, 2020
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract] |
Statutory Accounting Practices Disclosure [Table Text Block] | Our insurance subsidiaries’ statutory net income and statutory policyholders’ surplus for the years ended and as of December 31, 2020, 2019 and 2018 were as follows.
|  | December 31,
(In millions) |  | 2020 |  | 2019 |  | 2018
Statutory net income (loss) |  |  |  |  |  |
Radian Guaranty |  | $ | 441.9 |  |  | $ | 703.4 |  |  | $ | 501.9 |
Radian Reinsurance |  | 32.5 |  |  | 101.6 |  |  | 86.1 |
Other Mortgage Subsidiaries |  | 1.1 |  |  | 0.1 |  |  | (2.8) |
Radian Title Insurance |  | 2.1 |  |  | 0.3 |  |  | (1.8) |
Statutory policyholders’ surplus |  |  |  |  |  |
Radian Guaranty |  | $ | 481.5 |  |  | $ | 637.7 |  |  | $ | 814.1 |
Radian Reinsurance |  | 360.7 |  |  | 455.6 |  |  | 356.2 |
Other Mortgage Subsidiaries |  | 41.3 |  |  | 45.7 |  |  | 58.0 |
Radian Title Insurance |  | 28.8 |  |  | 27.0 |  |  | 27.0 |
Statutory Accounting Practices, Surplus Additions (Distributions) [Table Text Block] | The surplus additions (distributions) between Radian Group and Radian Guaranty and our other insurance subsidiaries for the years ended December 31, 2020, 2019 and 2018 were as follows.
|  | Year Ended December 31,
(In millions) |  | 2020 |  | 2019 |  | 2018
Additions to Radian Guaranty surplus |  | $ | 200.0 |  |  | $ | — |  |  | $ | — |
Distributions from Radian Guaranty surplus |  | — |  |  | (375.0) |  |  | (450.0) |
Additions to other insurance subsidiaries’ surplus |  | — |  |  | 65.2 |  |  | — |
Distributions from other insurance subsidiaries’ surplus |  | (465.0) |  |  | (14.0) |  |  | — |

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- Definition Statutory Accounting Practices, Surplus Additions (Distributions) [Table Text Block] + References No definition available. + Details
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- References No definition available. + Details
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- Definition Tabular disclosure of how the entity's reporting under GAAP as of the balance sheet date differs from the results based on prescribed and permitted accounting practices of the state or country of domicile in which a relevant statutory filing is made, or differences in results based on the National Association of Insurance Commissioners (NAIC) prescribed practices, or a combination thereof. Describes the accounting practices used and the related monetary effect on statutory surplus, net income, and risk-based capital. If an insurance enterprise's risk-based capital would have triggered a regulatory event had it not used a permitted practice, that fact is disclosed in the financial statements. Permitted statutory accounting practices include practices not prescribed but allowed by the domiciliary state insurance department regulatory authority. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24790-158529 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24746-158529 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 55 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82848697&loc=d3e24959-158530 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 55 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82848697&loc=d3e24938-158530 + Details
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