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Note 7 - Reinsurance (Tables) | 3 Months Ended
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Mar. 31, 2019
Reinsurance Disclosures [Abstract] |
Reinsurance, Net Premiums Written and Earned [Table Text Block] | The effect of all of our reinsurance programs on our net premiums written and earned is as follows:
| Three Months Ended March 31,
(In thousands) | 2019 |  | 2018
Net premiums written—insurance: |  |  |
Direct | $ | 261,031 |  |  | $ | 256,599 |
Assumed (1) | 2,445 |  |  | 1,312 |
Ceded (2) | (10,156 | ) |  | (19,931 | )
Net premiums written—insurance | $ | 253,320 |  |  | $ | 237,980 |
Net premiums earned—insurance: |  |  |
Direct | $ | 280,223 |  |  | $ | 257,431 |
Assumed (1) | 2,450 |  |  | 1,318 |
Ceded (2) | (19,161 | ) |  | (16,199 | )
Net premiums earned—insurance | $ | 263,512 |  |  | $ | 242,550 |
______________________
(1) | Includes premiums earned from our participation in certain Front-end and Back-end credit risk transfer programs.
(2) Net of profit commission.
Schedule of VIE Assets [Table Text Block] | The following table presents the total assets of Eagle Re 2018-1 as well as Radian Guaranty’s maximum exposure to loss associated with Eagle Re 2018-1, as of the dates indicated.
|  | At March 31, 2019
|  |  |  | Maximum Exposure to Loss
(In thousands) |  | Total VIE Assets (1) |  | On - Balance Sheet |  | Off - Balance Sheet (2) |  | Total
Eagle Re 2018-1 |  | $ | 434,034 |  |  | $ | 1,683 |  | (3) | $ | 434,034 |  |  | 435,717 |
Total |  | $ | 434,034 |  |  | $ | 1,683 |  |  | $ | 434,034 |  |  | 435,717 |
|  | At December 31, 2018
|  |  |  | Maximum Exposure to Loss
(In thousands) |  | Total VIE Assets (1) |  | On - Balance Sheet |  | Off - Balance Sheet (2) |  | Total
Eagle Re 2018-1 |  | $ | 434,034 |  |  | $ | 1,114 |  | (3) | $ | 434,034 |  |  | 435,148 |
Total |  | $ | 434,034 |  |  | $ | 1,114 |  |  | $ | 434,034 |  |  | 435,148 |
______________________
(1) | Assets of Eagle Re 2018-1 are required to be invested in U.S. government money market funds, cash or U.S. Treasury securities. Liabilities of Eagle Re 2018-1 consist of its mortgage insurance-linked notes of $434.0 million, as described above.
(2) | Represents the maximum amount that would be payable in the future by Radian Guaranty to its policyholders on claims, without the benefit of any corresponding reinsurance recoverables, in the event of the combination of two events: (i) all of the assets in the reinsurance trust (consisting of U.S. government money market funds, cash or U.S. Treasury securities) have become worthless and (ii) $660.4 million of claims have been paid on the reinsured RIF.
(3) Represents the fair value of the related embedded derivative, included in other assets in our condensed consolidated balance sheets.

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- Definition Schedule of VIE Assets [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of the effects of reinsurance, for example, but not limited to, disclosure of direct, assumed, and ceded insurance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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