Note 9 - Income Taxes (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Unrecognized Tax Benefits	$ 700,000	$ 700,000
Deferred Tax Liabilities, Other	0
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	(300,000)
Effective Income Tax Rate Reconciliation, Percent	40.00%	38.90%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 500,000