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Note 1 - Condensed Consolidated Financial Statements - Business Overview and Significant Accounting Policies Business Overview and Significant Accounting Policies(Details) $ in Thousands, shares in Millions | 3 Months Ended
--- | ---
Mar. 31, 2016 USD ($) segment shares | Mar. 31, 2015 USD ($)
Basis of Presentation and Business Overview [Line Items] |  |
Net cash provided by operating activities, continuing operations | $ 41,869 | $ 666
Net cash used in operating activities, discontinued operations | 0 | (1,759)
Net cash provided by investing activities, discontinued operations | 0 | 4,999
Cash and Cash Equivalents, Period Increase Including Discontinued Operations |  | 29,979
Net Cash Provided by (Used in) Discontinued Operations | $ 0 | 3,240
Business Overview [Abstract] |  |
Number of Operating Segments | segment | 2 |
Mortgage Insurance [Abstract] |  |
Stock Repurchased During Period, Shares | shares | 9.4 |
Payments for Repurchase of Common Stock | $ 100,188 | 0
Loss on induced conversion and debt extinguishment (Note 10) | $ 55,570 | 0
Mortgage Insurance Segment |  |
Mortgage Insurance [Abstract] |  |
Private Mortgage Insurance Protects Lenders For Loans Made With Less Than This Maximum Down Payment Percentage | 20.00% |
Percentage Of Primary Insurance On Domestic First-Lien Mortgages To Total Risk In Force | 97.60% |
First Lien Primary Mortgage Insurance Risk In Force | $ 45,800,000 |
Percentage Of Pool Insurance On Domestic First-Lien Mortgages To Total Risk In Force | 2.30% |
Senior Notes Due 2021 |  |
Mortgage Insurance [Abstract] |  |
Long-term debt, Gross | $ 350,000 |
Convertible Senior Notes Due 2017 |  |
Mortgage Insurance [Abstract] |  |
Debt Instrument, Repurchase Amount | 30,100 |
Convertible Senior Notes Due 2019 |  |
Mortgage Insurance [Abstract] |  |
Debt Instrument, Repurchase Amount | 288,400 |
Convertible Debt [Member] |  |
Mortgage Insurance [Abstract] |  |
Loss on induced conversion and debt extinguishment (Note 10) | $ 55,600 |
Scenario, Previously Reported [Member] |  |
Basis of Presentation and Business Overview [Line Items] |  |
Net cash provided by operating activities, continuing operations |  | 80
Net cash used in operating activities, discontinued operations |  | (12,168)
Net cash provided by investing activities, discontinued operations |  | 9,514
Cash and Cash Equivalents, Period Increase Including Discontinued Operations |  | 23,499
Net Cash Provided by (Used in) Discontinued Operations |  | $ (3,240)

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- Definition Amount of increase (decrease) in cash and cash equivalents including discontinued operations. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. + References No definition available. + Details
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