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Note 2 - Significant Accounting Policies Accounting Policy (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2015 USD ($) group payment
Investments [Abstract] |
Number of Investment Categories | 3
Maximum Maturity Duration for Short Term Investment Grouping | 3 months
Minimum [Member] |
Losses and LAE Mortgage Insurance [Abstract] |
Number Of Payments Missed For Insured Loans | payment | 2
Computer Equipment [Member] | Minimum [Member] |
Property, Plant and Equipment, Net [Abstract] |
Property, Plant and Equipment, Useful Life, Maximum | 3 years
Computer Equipment [Member] | Maximum [Member] |
Property, Plant and Equipment, Net [Abstract] |
Property, Plant and Equipment, Useful Life, Maximum | 5 years
Furniture, Fixtures and Office Equipment [Member] |
Property, Plant and Equipment, Net [Abstract] |
Property, Plant and Equipment, Useful Life, Maximum | 7 years
Mortgage Insurance Segment |
Reserve for Premium Deficiency [Abstract] |
Number of Mortgage Insurance Product Categories | 2
Accounting Standards Update 2015-03 [Member] |
New Accounting Pronouncements and Changes in Accounting Principles [Abstract] |
Unamortized Debt Issuance Expense | $ | $ 17.6

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