Revenue Recognition: Schedule Of Revenues By Product Category (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Sales, net	$ 10,479	$ 12,494	$ 30,168	$ 35,073
Obstetrics
Sales, net	1,279		3,351
Gynecology/Electrosurgery/Urology
Sales, net	5,049		14,631
Neonatal
Sales, net	1,499		4,435
Blood Pressure Monitoring and Accessories
Sales, net	2,652		7,751
DomesticUsMember
Sales, net	6,950		18,906
DomesticUsMember | Obstetrics
Sales, net	1,032		2,739
DomesticUsMember | Gynecology/Electrosurgery/Urology
Sales, net	2,847		7,686
DomesticUsMember | Neonatal
Sales, net	1,151		3,266
DomesticUsMember | Blood Pressure Monitoring and Accessories
Sales, net	1,920		5,215
OutsideUsMember
Sales, net	3,529		11,262
OutsideUsMember | Obstetrics
Sales, net	247		612
OutsideUsMember | Gynecology/Electrosurgery/Urology
Sales, net	2,202		6,945
OutsideUsMember | Neonatal
Sales, net	348		1,169
OutsideUsMember | Blood Pressure Monitoring and Accessories
Sales, net	$ 732		$ 2,536