Revenue Recognition: Schedule Of Revenues By Product Category (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Sales, net	$ 12,604	$ 8,787	$ 23,568	$ 19,689
Obstetrics
Sales, net	1,159		2,176
Gynecology/Electrosurgery/Urology
Sales, net	5,674		10,802
Neonatal
Sales, net	1,642		3,229
Blood Pressure Monitoring and Accessories
Sales, net	4,129		7,361
DomesticUsMember
Sales, net	8,023		14,805
DomesticUsMember | Obstetrics
Sales, net	946		1,850
DomesticUsMember | Gynecology/Electrosurgery/Urology
Sales, net	2,873		5,486
DomesticUsMember | Neonatal
Sales, net	1,303		2,476
DomesticUsMember | Blood Pressure Monitoring and Accessories
Sales, net	2,901		4,993
OutsideUsMember
Sales, net	4,581		8,763
OutsideUsMember | Obstetrics
Sales, net	213		326
OutsideUsMember | Gynecology/Electrosurgery/Urology
Sales, net	2,801		5,316
OutsideUsMember | Neonatal
Sales, net	339		753
OutsideUsMember | Blood Pressure Monitoring and Accessories
Sales, net	$ 1,228		$ 2,368