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, 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
OUS
Sales, net (notes 1, 3, 9 and 11)													20,310	18,395	16,312
OUS | Obstetrics
Sales, net (notes 1, 3, 9 and 11)													676	735	846
OUS | Gynecology/Electrosurgery/Urology
Sales, net (notes 1, 3, 9 and 11)													11,603	11,053	9,934
OUS | Neonatal
Sales, net (notes 1, 3, 9 and 11)													1,517	1,347	1,490
OUS | Blood Pressure Monitoring and Accessories
Sales, net (notes 1, 3, 9 and 11)													$ 6,514	$ 5,260	$ 4,042