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Note 9 - Losses and LAE Rescissions And Denials (Details) - USD ($) $ in Thousands |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 29, 2017 | Mar. 31, 2016 | Mar. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2014
Rescissions And Denials [Line Items] |  |  |  |  |
Reserve for losses and loss adjustment expense (“LAE”) (Note 9) |  | $ 891,348 |  | $ 976,399 |
2013 Freddie Mac Agreement [Member] |  |  |  |  |
Rescissions And Denials [Line Items] |  |  |  |  |
Reserve for losses and loss adjustment expense (“LAE”) (Note 9) |  | 57,300 |  |  |
2013 Freddie Mac Agreement [Member] | Radian Guaranty Inc [Member] |  |  |  |  |
Rescissions And Denials [Line Items] |  |  |  |  |
Restricted Investments Held as Collateral for Master Transaction Agreement, Net |  | 75,300 |  | 74,700 |
2013 Freddie Mac Agreement [Member] | Radian Guaranty Inc [Member] | Maximum [Member] | Scenario, Forecast [Member] |  |  |  |  |
Rescissions And Denials [Line Items] |  |  |  |  |
Not Final Loss Mitigation Activity | $ 74,000 |  |  |  |
Mortgage Insurance Segment |  |  |  |  |
Rescissions And Denials [Line Items] |  |  |  |  |
Claim Rescissions And Denials, Net of Reinstatements |  | 5,600 | $ (14,700) |  |
Decrease To Our Loss Reserves Due To Estimated Rescissions And Denials |  | 67,000 |  | 69,000 |
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Claims, Amount |  | 22,800 |  | 26,600 |
Reserve for losses and loss adjustment expense (“LAE”) (Note 9) |  | $ 891,348 | $ 1,384,714 | $ 976,399 | $ 1,560,032

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- Definition This concept represents amounts related to policies that were rescinded due to our review of a claim where it was determined that a loan did not qualify for insurance, and claim denials which are a result of the loan servicer not providing the documentation needed to perfect the claim. The activity is net of any reinstatements. + References No definition available. + Details
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- Definition This concept represents the decrease to our loss reserve estimate related to our assumption for future rescinded policies and claim denials. + 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 Rescissions [Line Items] + References No definition available. + Details
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- Definition Investments restricted as to use but included in the marketable securities categories of an unclassified balance sheet, net of final loss mitigation activity. + 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) -URI http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (cc) -URI http://asc.fasb.org/extlink&oid=65670824&loc=d3e14764-158437 + Details
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- Definition Estimated costs as of the balance sheet date of settling insured claims and costs incurred in the claims settlement process for claims that have not yet been submitted to the insurance company for reimbursement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.W) -URI http://asc.fasb.org/extlink&oid=27015833&loc=d3e570705-122907 + Details
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