Note 8 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Income Tax Expense (Benefit), Total	$ (299)	$ 840	$ 665	$ 2,390
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	1,076	1,556	5,996	6,097
Effective Income Tax Rate Reconciliation, Foreign Exchange and Mark-to-market Adjustments, Amount	(800)		(1,600)
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Amount	200	$ 300	400	$ 100
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	$ 0		$ 0		$ 0