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Note 9 - Losses and LAE Mortgage Insurance Loss Reserves Rollforward (Details) (USD $) |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  | 12 Months Ended | 30 Months Ended |
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Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2013 | Jun. 30, 2014 Mortgage Insurance Segment | Jun. 30, 2013 Mortgage Insurance Segment | Jun. 30, 2014 Mortgage Insurance Segment | Jun. 30, 2013 Mortgage Insurance Segment | Dec. 31, 2013 Mortgage Insurance Segment | Jun. 30, 2014 Mortgage Insurance Segment Default To Claim Rate Assumptions Two Missed Payments [Member] payment | Jun. 30, 2014 Mortgage Insurance Segment Default To Claim Rate Assumptions Three Missed Payments [Member] payment | Jun. 30, 2014 Mortgage Insurance Segment Default To Claim Rate Assumptions Twelve Or More Missed Payments [Member] payment | Aug. 31, 2013 2013 Freddie Mac Agreement [Member] Mortgage Insurance Segment | Jun. 30, 2014 Primary Mortgage Product [Member] First Lien Position [Member] 2013 Freddie Mac Agreement [Member] Mortgage Insurance Segment | Jun. 30, 2014 Primary Mortgage Product [Member] First Lien Position [Member] 2013 Freddie Mac Agreement [Member] Mortgage Insurance Segment | Dec. 31, 2013 Primary Mortgage Product [Member] First Lien Position [Member] 2013 Freddie Mac Agreement [Member] Mortgage Insurance Segment
Loss reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at January 1 | $ 1,749,435,000 | $ 2,185,421,000 | $ 2,716,490,000 | $ 1,893,960,000 |  | $ 2,894,500,000 |  | $ 2,164,353,000 |  | $ 3,083,608,000 |  | $ 3,083,608,000 |  |  |  |  |  |  |  |
Less reinsurance recoverables | 24,752,000 | 46,846,000 |  | 25,751,000 | [1] | 72,101,000 | [1] | 38,363,000 | [1] | 83,238,000 | [1] | 83,238,000 | [1] |  |  |  |  |  |  |
Balance at beginning of period, net of reinsurance recoverables |  |  |  | 1,868,209,000 |  | 2,822,399,000 |  | 2,125,990,000 |  | 3,000,370,000 |  | 3,000,370,000 |  |  |  |  |  |  |  |
Add losses and LAE incurred in respect of default notices reported and unreported in [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current year |  |  |  | 89,873,000 | [2] | 154,606,000 | [2] | 232,569,000 | [2] | 337,140,000 | [2] |  |  |  |  |  |  |  |  |
Prior years |  |  |  | (25,608,000) |  | (18,196,000) |  | (119,144,000) |  | (68,774,000) |  |  |  |  |  |  |  |  |  |
Total incurred losses and LAE |  |  |  | 64,265,000 |  | 136,410,000 |  | 113,425,000 |  | 268,366,000 |  |  |  |  |  |  |  |  |  |
Deduct paid claims and LAE related to [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Paid Losses and LAE Current year |  |  |  | 437,000 | [2] | 149,000 | [2] | 437,000 | [2] | 149,000 | [2] |  |  |  |  |  |  |  |  |
Paid losses and LAE Prior years |  |  |  | 239,814,000 |  | 326,226,000 |  | 546,755,000 |  | 636,153,000 |  |  |  |  |  |  |  |  |  |
Total paid losses and LAE |  |  |  | 240,251,000 |  | 326,375,000 |  | 547,192,000 |  | 636,302,000 |  |  |  |  |  |  |  |  |  |
Balance at end of period, net of reinsurance recoverables |  |  |  | 1,692,223,000 |  | 2,632,434,000 |  | 1,692,223,000 |  | 2,632,434,000 |  | 2,125,990,000 |  |  |  |  |  |  |  |
Add reinsurance recoverables | 24,752,000 | 46,846,000 |  | 22,458,000 | [1] | 58,427,000 | [1] | 22,458,000 | [1] | 58,427,000 | [1] | 38,363,000 | [1] |  |  |  |  |  |  |
Balance at June 30 | 1,749,435,000 | 2,185,421,000 | 2,716,490,000 | 1,714,681,000 |  | 2,690,861,000 |  | 1,714,681,000 |  | 2,690,861,000 |  | 2,164,353,000 |  |  |  |  |  |  |  |
Final Loss Mitigation Activity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 24,000,000 |  |
Not Final Loss Mitigation Activity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 128,100,000 |
Restricted Investments Held as Collateral for Master Transaction Agreement, Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 205,000,000 | 209,000,000 | 209,000,000 | 205,000,000
Default To Claim Rate Detail [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted Average Default To Claim Rate Assumption Net Of Denials Rescissions and Reinstatements |  |  |  |  |  |  |  | 45.00% |  |  |  | 47.00% |  |  |  |  |  |  |  |
Weighted Average Default To Claim Rate Assumption Excluding Pending Claims Net Of Denials And Rescissions |  |  |  |  |  |  |  | 39.00% |  |  |  |  |  |  |  |  |  |  |  |
Default To Claim Rate Estimate Net Of Rescission And Denial Estimates For Insured Loans That Missed Two To Three Monthly Payments |  |  |  |  |  |  |  | 19.00% |  |  |  |  |  |  |  |  |  |  |  |
Default To Claim Estimate Net Of Rescission And Denial Estimates For Loans That Missed Twelve Or More Monthly Payments |  |  |  |  |  |  |  | 48.00% |  |  |  |  |  |  |  |  |  |  |  |
Number Of Payments Missed For Insured Loans |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 | 3 | 12 |  |  |  |
Impact To Our Loss Reserves Due To Estimated Rescissions And Denials [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease To Our Loss Reserves Due To Estimated Rescissions And Denials |  |  |  | 192,000,000 |  |  |  | 192,000,000 |  |  |  | 247,000,000 |  |  |  |  |  |  |  |
Increase To Our Loss Reserves Due To Estimated Future Reinstatements Of Previously Rescinded Policies And Denied Claims |  |  |  | $ 272,000,000 |  |  |  | $ 272,000,000 |  |  |  | $ 283,000,000 |  |  |  |  |  |  |  |
[1] | Related to ceded losses on captive reinsurance transactions and the Reinsurance 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.

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- Definition Default To Claim Estimate Net Of Rescission And Denial Estimates For Loans That Missed Twelve Or More Monthly Payments + References No definition available. + Details
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- Definition Loss mitigation activities (including rescinding and canceling policy coverage as well as denying and curtailing claim payments based on criteria included in the applicable master policy) which have passed the contractual limitation periods for providing appropriate documentation for perfecting the claim and therefore are considered final rescissions, denials, cancellations or curtailments. + References No definition available. + Details
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- Definition This concept represents the increase to our loss reserve estimate related to our assumption for future reinstatements of previously rescinded policies and denied claims which are primarily reflected in the IBNR reserve estimate. + References No definition available. + Details
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- Definition Loss mitigation activities (including rescinding and cancelling policy coverage as well as denying and curtailing claim payments based on criteria included in the applicable master policy) which have not reached the contractual limitation periods for providing appropriate documentation for perfecting the claim and therefore cannot be considered as final rescissions, denials, cancellations or curtailments. + References No definition available. + Details
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- Definition The concept represents the rate at which defaulted loans are expected to result in claim net of denials, rescissions and reinstatements. + References No definition available. + Details
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- Definition The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date. + 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),(b),(c) -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437 + Details
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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 Financial Reporting Release (FRR) -Number 403 -Paragraph 04 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Subparagraph a -Article 7 + Details
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