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, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Sales, net (notes 1, 3, 9 and 11)	$ 12,914	$ 12,572	$ 12,604	$ 10,964	$ 12,010	$ 10,479	$ 8,787	$ 10,902	$ 11,831	$ 12,494	$ 11,846	$ 10,732	$ 49,054	$ 42,178	$ 46,904
Global
Sales, net (notes 1, 3, 9 and 11)													49,054	42,178	46,904
Global | Obstetrics
Sales, net (notes 1, 3, 9 and 11)													4,675	4,523	5,000
Global | Gynecology/Electrosurgery/Urology
Sales, net (notes 1, 3, 9 and 11)													21,973	20,552	25,354
Global | Neonatal
Sales, net (notes 1, 3, 9 and 11)													6,691	5,870	6,066
Global | Blood Pressure Monitoring and Accessories
Sales, net (notes 1, 3, 9 and 11)													$ 15,715	$ 11,233	$ 10,484