Note 8 - Losses and LAE Losses and LAE for Mortgage Insurance (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Reserve for losses and loss adjustment expenses
Liability for Claims and Claims Adjustment Expense	$ 2,346,879	$ 3,149,936
Mortgage Insurance Segment
Reserve for losses and loss adjustment expenses
Liability for Claims and Claims Adjustment Expense, Property Casualty Liability	2,314,785	3,083,608	3,046,706
Financial Guaranty Segment
Reserve for losses and loss adjustment expenses
Liability for Claims and Claims Adjustment Expense, Financial Guarantee Insurance Contracts	$ 32,094	$ 66,328	$ 72,891