Note 14 - Other Income and Expense - Other Income and Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Foreign exchange transaction (loss) gain	$ (271)	$ 322	$ (18)	$ 305
Government subsidy income	847	1,138	1,828	1,360
Other non-operating gain (loss)	296	(14)	301	87
Loss on disposal of assets	(6)	0	(15)	(10)
Total other income, net	$ 866	$ 1,446	$ 2,096	$ 1,742