Note 2 - Segment Reporting Reconciliation of Net Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net (loss) income:
Net (loss) income	$ (169,232)	$ 103,006
Mortgage Insurance Segment
Net (loss) income:
Net (loss) income	(45,247)	(236,032)
Financial Guaranty Segment
Net (loss) income:
Net (loss) income	$ (123,985)	$ 339,038