Note 16 - Commitments and Contingencies Legal Proceedings (Details) (USD $) In Millions, unless otherwise specified		0 Months Ended		105 Months Ended	9 Months Ended
	Sep. 30, 2014 matters	Apr. 09, 2013 Real Estate Settlement Practices Act of 1974 [Member]	Sep. 30, 2014 Internal Revenue Service (IRS) [Member]	Sep. 30, 2014 Captive Reinsurance Arrangements [Member]	Sep. 30, 2014 Minimum [Member] plaintiff loan	Sep. 30, 2014 Total Primary Insurance Mortgage Insurance Products [Member] Maximum [Member] Insurance Claims [Member]	Sep. 30, 2014 Pool Insurance Mortgage Insurance Product [Member] Maximum [Member] Insurance Claims [Member]	Sep. 30, 2014 REMIC Residual [Member] Internal Revenue Service (IRS) [Member]	Sep. 30, 2014 Settled Litigation [Member] Loss Contingency 8-1-2011 Claim [Member] loan
Loss Contingencies [Line Items]
Litigation Settlement, Number of Home Mortgage Loans									507
Risk In Force									$ 29.0
Litigation Settlement, Gross		3.75
Number Of Home Mortgage Loans Involved In Pending Litigation					1
Loss Contingency, Number of Plaintiffs Whose Loans Were Insured					1
Minimum Number of Pending or Threatened Matters That Could Effect Our Results	1
Loss Contingency, Settlement Agreement, Number of Years Restricted From Activities		10 years
Insurance Recoveries				817
Income Tax Examination, Notice of Deficiency, Amounts Related to Unpaid Taxes and Penalties								157
Income Tax Examination, Estimated Interest on Notice of Deficiency Amounts								113
Income Tax Examination, Proposed State Liabilities Resulting from IRS Examination of Tax Years 2000 Through 2007								30
Income Tax Examination, Amount of Claimed Income Tax Refund Being Disallowed for Tax Years 2006 and 2007			$ 105
Loss Contingency, Legal Actions Commencement, Period						2 years	3 years