Note 11 - Revenues By Product Category And Region: Schedule Of Global Revenues By Product Category (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	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, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Sales, net (notes 1, 3, 9 and 11)	$ 13,575	$ 12,955	$ 13,428	$ 12,323	$ 12,914	$ 12,572	$ 12,604	$ 10,964	$ 12,010	$ 10,479	$ 8,787	$ 10,902	$ 52,281	$ 49,054	$ 42,178
Global
Sales, net (notes 1, 3, 9 and 11)													52,281	49,054	42,178
Global | Obstetrics
Sales, net (notes 1, 3, 9 and 11)													4,661	4,675	4,523
Global | Gynecology/Electrosurgery/Urology
Sales, net (notes 1, 3, 9 and 11)													21,841	21,973	20,552
Global | Neonatal
Sales, net (notes 1, 3, 9 and 11)													7,567	6,691	5,870
Global | Blood Pressure Monitoring and Accessories
Sales, net (notes 1, 3, 9 and 11)													$ 18,212	$ 15,715	$ 11,233