Note 12 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Effective Income Tax Rate Reconciliation, Percent	30.00%	37.00%
Deferred Tax Assets, Net of Valuation Allowance	$ 31,400
Deferred Tax Liabilities, Gross	16,900
Deferred Tax Assets, Valuation Allowance	$ 0		$ 0