Note 5 - Accumulated Other Comprehensive Loss - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Balance		$ 44,602	$ 45,133	$ 44,841	$ 46,200
Balance		43,650	44,583	43,650	44,583
AOCI Attributable to Parent [Member]
Balance		(1,642)	(1,674)	(1,728)	(1,604)
Foreign currency translation adjustments (1)	[1]	(48)	(222)	38	(292)
Balance		$ (1,690)	$ (1,896)	$ (1,690)	$ (1,896)

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