Note 8 - Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Apr. 30, 2011
Note 8 - Income Taxes (Details) [Line Items]
Income Tax Expense (Benefit)	$ 502,000	$ (357,000)	$ 759,000	$ (562,000)
Effective Income Tax Rate Reconciliation, Percent	7.30%	(7.00%)	4.70%	(7.60%)
Unrecognized Tax Benefits	15,500,000		15,500,000		14,900,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	5,300,000		5,300,000		5,000,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	900,000		900,000		800,000
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority						10,500,000
Scenario, Forecast [Member]
Note 8 - Income Taxes (Details) [Line Items]
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations			$ 1,200,000