Note 19 - Commitments and Contingencies Legal Proceedings (Details) (USD $)	Dec. 31, 2012 years	Aug. 13, 2010 Loss Contingency 8-13-2010 Claim [Member] policy loan	Aug. 01, 2011 Loss Contingency 8-1-2011 Claim [Member] loan	Oct. 09, 2012 Real Estate Settlement Practices Act of 1974 [Member] borrower	Sep. 28, 2012 Real Estate Settlement Practices Act of 1974 [Member] borrower	Dec. 30, 2011 Real Estate Settlement Practices Act of 1974 [Member] plaintiff	Dec. 31, 2012 Loss Contingency Related to Primary Insurance [Member] years	Dec. 31, 2012 Loss Contingency Related to Other Insurance Policies [Member] years
Pending Law Suits [Abstract]
Number Of RMBS Bulk Primary Mortgage Insurance Policies Involved In Pending or Threatened Litigation		27
Number Of Loans Included In The RMBS Bulk Primary Mortgage Insurance Policies Involved In Litigation		680
Number Of Home Mortgage Loans Involved In Pending Litigation			220
Loss Reserve Information [Abstract]
Under Our Master Insurance Policy Any Suit Or Action Arising From Any Right Of The Insured Under The Policy Must Be Commenced Within This Number Of Years After Such Right First Arose	2						2
Under Our Master Insurance Policy Any Suit Or Action Arising From Any Right Of Certain Other Policies Must Be Commenced Within This Number Of Years After Such Right First Arose	3							3
Risk In Force		$ 20,000,000	$ 13,000,000
Loss Contingency, Number of Plaintiffs Whose Loans Were Insured						1
Loss Contingency, Number of Additional Borrowers with Loss Contingency				1	3