Note 10 - Income Taxes (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ 17,890,000	$ 16,887,000
Effective Income Tax Rate Reconciliation, Percent	36.40%	36.90%
Income Tax Refund Receivable			$ 8,600,000