Note 17 - Commitments and Contingencies Contingent Claims for Trade Credit and Surety Primary Insurers (Details) (Subsequent Event [Member], Trade Credit Reinsurance and Surety Insurance [Member], Financial Guaranty Segment, USD $) In Millions, unless otherwise specified	Jan. 31, 2014
Euro Member Countries, Euro
Loss Contingencies [Line Items]
Loss Contingency, Range of Possible Loss, Minimum	$ 5.8
Loss Contingency, Range of Possible Loss, Maximum	19.3
United States of America, Dollars
Loss Contingencies [Line Items]
Loss Contingency, Range of Possible Loss, Minimum	7.9
Loss Contingency, Range of Possible Loss, Maximum	$ 26.6