Note 12 - Income Taxes (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Apr. 30, 2011
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ 536,000	$ 257,000
Effective Income Tax Rate Reconciliation, Percent	8.20%	2.80%
Unrecognized Tax Benefits	16,700,000		16,400,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	5,000,000		4,800,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	500,000		500,000
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority				$ 10,500,000