Note 13 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Effective Income Tax Rate Reconciliation, Percent	40.50%	39.10%	39.70%	39.00%
Deferred Tax Assets, Valuation Allowance	$ 0		$ 0
Deferred Tax Assets, Net of Valuation Allowance	33,400,000		33,400,000
Deferred Tax Liabilities, Gross	$ 25,400,000		$ 25,400,000