Note 12 - Business Segment and Geographic Financial Data - Geographic Segment Financial Data (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Revenues	$ 26,677	$ 25,133
Assets	47,179	48,797
UNITED STATES
Revenues	21,022	17,802
Assets	44,345	44,430
Non-US [Member]
Revenues	5,655	7,331
Assets	$ 2,834	$ 4,367