Note 13 - RevenuesByProductCategoryAndRegion: ScheduleOfGlobalRevenuesByProductCategory (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Sales, net	$ 9,756	$ 10,390	$ 10,965	$ 10,887	$ 10,201	$ 10,125	$ 10,829	$ 10,259	$ 41,998	$ 41,414	$ 39,298
Global
Sales, net									41,998	41,414	39,298
Global | Obstetrics
Sales, net									4,447	4,499	4,532
Global | Gynecology/Electrosurgery/Urology
Sales, net									23,167	23,175	20,683
Global | Neonatal
Sales, net									6,436	6,154	6,007
Global | Blood Pressure Monitoring and Accessories
Sales, net									$ 7,948	$ 7,586	$ 8,076