Note 5 - Accumulated Other Comprehensive Loss - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Balance		$ 44,583	$ 45,898	$ 46,200	$ 22,321
Balance		44,832	46,444	44,832	46,444
AOCI Attributable to Parent [Member]
Balance		(1,896)	(1,430)	(1,604)	(1,370)
Foreign currency translation adjustments (1)	[1]	(155)	(153)	(447)	(213)
Balance		$ (2,051)	$ (1,583)	$ (2,051)	$ (1,583)

[1] In all periods presented, there were no tax impacts related to rate changes and no amounts were reclassified to earnings.