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Note 10 - Losses and Loss Adjustment Expenses Mortgage Insurance Loss Reserves Rollforward (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 USD ($) percentagepoint | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Loss reserve [Roll Forward] |  |  |  |  |  |
Balance at January 1 |  | $ 1,560,032 |  |  |  |
Less reinsurance recoverables |  | 28,119 |  |  |  |
Deduct paid claims and LAE related to [Abstract] |  |  |  |  |  |
Add reinsurance recoverables |  | 11,044 | $ 28,119 |  |  |
Balance at December 31 |  | 976,399 | 1,560,032 |  |  |
Mortgage Insurance Segment |  |  |  |  |  |
Loss reserve [Roll Forward] |  |  |  |  |  |
Balance at January 1 |  | 1,560,032 | 2,164,353 |  | $ 3,083,608 |
Less reinsurance recoverables | [1] | 26,665 | 38,363 |  | 83,238 |
Balance at beginning of period, net of reinsurance recoverables |  | 1,533,367 | 2,125,990 |  | 3,000,370 |
Add losses and LAE incurred in respect of default notices reported and unreported in [Abstract] |  |  |  |  |  |
Current year | [2] | 229,061 | 351,184 | [3] | 519,188 | [3]
Prior years |  | (29,647) | (105,545) |  | 45,460 |
Total incurred losses and LAE |  | 199,414 | 245,639 |  | 564,648 |
Liability for Unpaid Claims and Claims Adjustment Expense, Increase (Decrease) in Incurred Claim Expense | [2] | 46,200 |  |  |  |
Deduct paid claims and LAE related to [Abstract] |  |  |  |  |  |
Paid Losses and LAE Current year | [2] | 10,837 | 13,562 |  | 35,108 |
Paid losses and LAE Prior years |  | 753,831 | 824,700 |  | 1,403,920 |
Total paid losses and LAE |  | 764,668 | 838,262 |  | 1,439,028 |
Balance at end of period, net of reinsurance recoverables |  | 968,113 | 1,533,367 |  | 2,125,990 |
Add reinsurance recoverables | [1] | 8,286 | 26,665 |  | 38,363 |
Balance at December 31 |  | $ 976,399 | 1,560,032 |  | 2,164,353 |
Default To Claim Rate Detail [Abstract] |  |  |  |  |  |
Percentage Point Change In Severity Used In Assumption Shift Analysis | percentagepoint |  | 1 |  |  |  |
2013 Freddie Mac Agreement [Member] | Mortgage Insurance Segment |  |  |  |  |  |
Deduct paid claims and LAE related to [Abstract] |  |  |  |  |  |
Total paid losses and LAE |  |  | 255,000 |  |  |
Provision for Loan Losses Expensed |  |  | $ 22,000 |  |  |
Primary Mortgage Product [Member] | Mortgage Insurance Segment |  |  |  |  |  |
Add losses and LAE incurred in respect of default notices reported and unreported in [Abstract] |  |  |  |  |  |
Default To Claim Rate Estimate, Gross, For New Defaults |  | 13.00% | 16.00% |  |  |
Deduct paid claims and LAE related to [Abstract] |  |  |  |  |  |
Default To Claim Rate Estimate, Gross, For Pre-Foreclosure Stage Defaults |  | 65.00% |  |  |  |
Default To Claim Rate Detail [Abstract] |  |  |  |  |  |
Weighted Average Default To Claim Rate Assumption Net Of Denials Rescissions and Reinstatements |  | 46.00% | 52.00% |  |  |
Weighted Average Default To Claim Rate Assumption Excluding Pending Claims Net Of Denials And Rescissions |  | 42.00% | 47.00% |  |  |
Default To Claim Estimate, Gross, For Foreclosure Stage Defaults |  | 81.00% |  |  |  |
Classification Error [Member] | Mortgage Insurance Segment |  |  |  |  |  |
Add losses and LAE incurred in respect of default notices reported and unreported in [Abstract] |  |  |  |  |  |
Current year |  |  | $ (71,800) |  | $ (65,000) |
[1] | Related to ceded losses on captive reinsurance transactions and the QSR Transactions. See Note 8 for additional information.
[2] | Related to underlying defaulted loans with a most recent default notice dated in the year indicated. For example, if a loan had defaulted in a prior year, but then subsequently cured and later re-defaulted in the current year, that default would be considered a current year default.
[3] | Amounts previously reported for losses and LAE incurred in respect of default notices reported and unreported in current year and prior years have been reclassified to correct an error. There was no net change to total incurred losses in any period as a result of these reclassifications. For the years ended December 31, 2014 and 2013, the amounts previously reported for losses and LAE incurred in respect of default notices reported and unreported in current year have been revised downward by approximately $71.8 million and $65.0 million, respectively, with equal and offsetting adjustments to the amount previously reported for default notices reported and unreported in prior years.

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- Definition Liability as of the balance sheet date for amounts representing estimated cost of settling unpaid claims under the terms of the underlying insurance policies, less estimated reinsurance recoveries on such claims. This includes an estimate for claims which have been incurred but not reported. Claim adjustment expenses represent the costs estimated to be incurred in the settlement of unpaid claims. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Subparagraph a -Article 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Financial Reporting Release (FRR) -Number 403 -Paragraph 04 -Subparagraph b + Details
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