Note 16 - Commitments and Contingencies Legal Proceedings (Details)	Aug. 13, 2010	Jun. 30, 2012 Insurance Claims [Member]	Aug. 01, 2011 Insurance Claims [Member]
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	271
Number Of Home Mortgage Loans Involved In Pending Litigation			140
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
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