Note 11 - Revenues By Product Category And Region: Schedule Of OUS Revenues By Product Category (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Sales, net (notes 1, 3, 9 and 11)	$ 12,333	$ 12,505	$ 12,866	$ 12,520	$ 13,575	$ 12,955	$ 13,428	$ 12,323	$ 12,914	$ 12,572	$ 12,604	$ 10,964	$ 50,224	$ 52,281	$ 49,054
OUS
Sales, net (notes 1, 3, 9 and 11)													22,020	20,310	18,395
OUS | Obstetrics
Sales, net (notes 1, 3, 9 and 11)													1,041	676	735
OUS | Gynecology/Electrosurgery/Urology
Sales, net (notes 1, 3, 9 and 11)													11,992	11,603	11,053
OUS | Neonatal
Sales, net (notes 1, 3, 9 and 11)													1,678	1,517	1,347
OUS | Blood Pressure Monitoring and Accessories
Sales, net (notes 1, 3, 9 and 11)													$ 7,309	$ 6,514	$ 5,260