Note 16 - Commitments and Contingencies Legal Proceedings (Details) (USD $)	Sep. 30, 2012 Loss Contingency Related to Other Insurance Policies [Member] years	Aug. 13, 2010 Loss Contingency 8_13_2010 Claim [Member] policy loan	Aug. 01, 2011 Loss Contingency 8_1_2011 Claim [Member] loan	Sep. 28, 2012 Pending Litigation [Member] borrower	Sep. 30, 2012 Loss Contingency Related to Primary Insurance [Member] years	Oct. 09, 2012 Subsequent Event [Member] Pending Litigation [Member] borrower
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
Risk In Force		$ 20,000,000	$ 13,000,000
Number Of Home Mortgage Loans Involved In Pending Litigation			221
Loss Contingency, Number of Additional Borrowers with Loss Contingency				3		1
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