Note 2 - Significant Accounting Policies Accounting Policy (Details) $ in Millions	12 Months Ended
	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