Note 13 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Expense (Benefit), Total	$ 241	$ 16
Effective Income Tax Rate Reconciliation, Percent, Total	(0.70%)	(0.10%)
Foreign Tax Authority [Member] | Canada Revenue Agency [Member]
Deferred Tax Assets, Operating Loss Carryforwards, Total	$ 98