Note 13 - Income Taxes From Operations (Details Textual) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Income Tax Expense (Benefit), Total	$ (88)	$ 99
Effective Income Tax Rate Reconciliation, Percent, Total	3.00%	23.70%