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Note 2 - Discontinued Operations (Details) - Entity [Domain] - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 01, 2015 | Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Net investment income |  | $ 19,285 | $ 16,663 | $ 36,613 | $ 31,981 |  |
Net gains on investments and other financial instruments |  | 28,448 | 25,332 | 45,227 | 68,300 |  |
Other income |  | 1,743 | 1,739 | 3,074 | 2,865 |  |
Revenues |  | 330,416 | 247,380 | 621,079 | 505,554 |  |
Policy acquisition costs |  | 6,963 | 6,746 | 14,713 | 13,763 |  |
Other operating expenses |  | 67,731 | 60,751 | 121,505 | 115,258 |  |
Costs and Expenses |  | 250,432 | 154,493 | 403,645 | 285,570 |  |
Income from discontinued operations, net of tax |  | 4,855 | 71,296 | 5,385 | 128,075 |  |
Available-for-sale Securities, Debt Securities |  | 1,178,842 |  | 1,178,842 |  | $ 536,890 |
Available-for-sale Securities, Equity Securities |  | 881 |  | 881 |  | 143,368 |
Trading securities—at fair value |  | 1,466,435 |  | 1,466,435 |  | 1,633,584 |
Short-term investments—at fair value |  | 1,649,370 |  | 1,649,370 |  | 1,300,872 |
Other invested assets |  | 13,620 |  | 13,620 |  | 14,585 |
Other assets |  | 349,371 |  | 349,371 |  | 357,864 |
Total assets held for sale |  | 0 |  | 0 |  | 1,736,444 | [1]
Unearned premiums |  | 665,947 |  | 665,947 |  | 644,504 |
Reserve for losses and loss adjustment expense (“LAE”) (Note 9) |  | 1,204,792 |  | 1,204,792 |  | 1,560,032 |
Other liabilities |  | 278,929 |  | 278,929 |  | 326,743 |
Total liabilities held for sale |  | 0 |  | 0 |  | 947,008 |
Radian Asset Assurance [Member] |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Sale of Stock, Percentage of Ownership before Transaction | 100.00% |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration | $ 810,000 |  |  |  |  |  |
Equity Method Investment, Net Sales Proceeds | $ 789,000 |  |  |  |  |  |
Discontinued Operation, Provision for Loss (Gain) on Disposal, before Income Tax |  | (350) | 0 | (14,280) | 0 | (468,000) |
Premiums Earned, Net, Financial Guarantee Insurance Contracts |  | 0 | 10,468 | 1,007 | 17,371 |  |
Net investment income |  | 0 | 9,074 | 9,153 | 17,985 |  |
Net gains on investments and other financial instruments |  | 7,818 | 19,978 | 21,486 | 42,159 |  |
Change in fair value of derivative instruments |  | 0 | 57,477 | 2,625 | 107,563 |  |
Other income |  | 0 | 78 | 0 | 79 |  |
Revenues |  | 7,818 | 97,075 | 34,271 | 185,157 |  |
Provision for losses |  | 0 | 5,078 | 502 | 10,727 |  |
Policy acquisition costs |  | 0 | 1,675 | (191) | 3,272 |  |
Other operating expenses |  | 0 | 4,800 | 4,107 | 10,202 |  |
Costs and Expenses |  | 0 | 11,553 | 4,418 | 24,201 |  |
Equity in net (loss) income of affiliates |  | 0 | 0 | (13) | (13) |  |
Income from operations of businesses held for sale |  | 7,818 | 85,522 | 29,840 | 160,943 |  |
Income tax provision on classification as held for sale |  | 2,613 | 14,226 | 10,175 | 32,868 |  |
Income from discontinued operations, net of tax |  | $ 4,855 | $ 71,296 | $ 5,385 | $ 128,075 |  |
Available-for-sale Securities, Debt Securities |  |  |  |  |  | 224,552 |
Available-for-sale Securities, Equity Securities |  |  |  |  |  | 3,749 |
Trading securities—at fair value |  |  |  |  |  | 689,887 |
Short-term investments—at fair value |  |  |  |  |  | 435,413 |
Other invested assets |  |  |  |  |  | 108,206 |
Other assets |  |  |  |  |  | 274,637 |
Total assets held for sale |  |  |  |  |  | 1,736,444 |
Unearned premiums |  |  |  |  |  | 158,921 |
Reserve for losses and loss adjustment expense (“LAE”) (Note 9) |  |  |  |  |  | 31,558 |
VIE debt |  |  |  |  |  | 85,016 |
Derivative liabilities |  |  |  |  |  | 183,370 |
Other liabilities |  |  |  |  |  | 488,143 |
Total liabilities held for sale |  |  |  |  |  | $ 947,008 |
[1] | Assets held for sale are not part of the Mortgage Insurance or Services segments.

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- Definition The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Other investments not otherwise specified in the taxonomy. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(f,g)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Other investments not otherwise specified in the taxonomy that will be realized in a short period of time, usually less than one year or the normal operating cycle, whichever is longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.5) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(g)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Carrying amount of premiums written on insurance contracts that have not been earned as of the balance sheet date. + 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.(a),13(a)(2)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 16 -Article 12 + Details
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