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Note 2 - Discontinued Operations Discontinued Operations (Details) - USD ($) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 01, 2015 | Mar. 31, 2016 | Mar. 31, 2015 | Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Net investment income |  | $ 27,201,000 | $ 17,328,000 |
Net gains on investments and other financial instruments |  | 31,286,000 | 16,779,000 |
Other income |  | 1,915,000 | 1,331,000 |
Total revenues |  | 312,952,000 | 290,663,000 |
Other operating expenses |  | 58,989,000 | 53,774,000 |
Total expenses |  | 210,550,000 | 153,213,000 |
Income from discontinued operations, net of tax |  | 0 | 530,000 |
Discontinued Operations, Disposed of by Sale [Member] | 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 | $ 810,000,000 |  |  |
Income from discontinued operations, net of tax |  | 0 |  |
Discontinued Operations, Held-for-sale [Member] | Radian Asset Assurance [Member] |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Total Operating Expenses Allocated to Subsidiaries From Parent Company |  | 0 | 0 |
Total Interest Expense Allocated to Subsidiaries From Parent Company |  | $ 0 | 0 |
Net premiums earned |  |  | 1,007,000 |
Net investment income |  |  | 9,153,000 |
Net gains on investments and other financial instruments |  |  | 13,668,000 |
Change in fair value of derivative instruments |  |  | 2,625,000 |
Total revenues |  |  | 26,453,000 |
Provision for losses |  |  | 502,000 |
Policy acquisition costs |  |  | (191,000) |
Other operating expenses |  |  | 4,107,000 |
Total expenses |  |  | 4,418,000 |
Equity in net (loss) of affiliates |  |  | (13,000) |
Income from operations of businesses held for sale |  |  | 22,022,000 |
Loss on sale |  |  | (13,930,000) | $ (467,500,000)
Income tax provision |  |  | 7,562,000 |
Income from discontinued operations, net of tax |  |  | $ 530,000 |

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- Definition This concept represents the gains and losses on investments and other financial instruments for the period excluding the impact of changes in the present value of insurance claims and recoveries on insured credit derivatives and VIEs, based on the company's ongoing insurance loss monitoring, which are a component of segment expenses. + References No definition available. + Details
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- Definition Total costs of sales and operating expenses for the period. + 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) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721675-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721525-107759 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721523-107759 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e957-107759 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e1012-107759 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569616-111683 + Details
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- Definition Amount, after effect of policies assumed or ceded, of expense related to provision for policy benefits and costs incurred for property and casualty insurance contracts. + 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 210.7-04.5) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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- Definition Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. + 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(2)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column G)) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915 + Details
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