Note 15 - Commitments and Contingencies Contingent Claims for Trade Credit and Surety Primary Insurers (Details) - Trade Credit Reinsurance and Surety Insurance [Member] € in Millions, $ in Millions	Jun. 30, 2015 servicers	Dec. 31, 2014 USD ($)	Dec. 31, 2014 EUR (€)
Financial Guaranty Segment
Loss Contingencies [Line Items]
Number of Servicers Who Have Submitted Claims	1
Radian Asset Assurance [Member] | Euro Member Countries, Euro
Loss Contingencies [Line Items]
Loss Contingency, Claims Received Through Reporting Period | €			€ 13.5
Radian Asset Assurance [Member] | United States of America, Dollars
Loss Contingencies [Line Items]
Loss Contingency, Claims Received Through Reporting Period | $		$ 16.4