Note 17 - Commitments and Contingencies Commitment for Non Cancelable Operating Leases in Future Years (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense	$ 5,600,000	$ 4,300,000	$ 5,600,000
Operating Leases, Future Minimum Payments Due, Current	10,849,000
Operating Leases, Future Minimum Payments, Due in Two Years	5,257,000
Operating Leases, Future Minimum Payments, Due in Three Years	3,860,000
Operating Leases, Future Minimum Payments, Due in Four Years	692,000
Operating Leases, Future Minimum Payments, Due in Five Years	620,000
Operating Leases, Future Minimum Payments, Due Thereafter	3,274,000
Operating Leases, Future Minimum Payments Due	24,552,000
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals	3,800,000
Sale of Radian Asset Assurance [Member]
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense	$ 1,700,000	$ 1,700,000	$ 2,300,000