Note 11 - Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Tax Disclosure [Text Block]
Income Tax Expense (Benefit) (in Dollars)	$ 31,666	$ 44,617	$ 71,105	$ 97,901
Effective Income Tax Rate Reconciliation, Percent	29.20%	28.60%	28.40%	28.40%