Note 13 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Expense (Benefit), Total	$ (218)	$ 172	$ (306)	$ 271
Effective Income Tax Rate Reconciliation, Percent, Total	7.80%	5.90%	5.30%	10.90%