Revenue Recognition: Schedule Of Revenues By Product Category (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Sales, net	$ 12,572	$ 10,479	$ 36,140	$ 30,168
Obstetrics
Sales, net	1,246		3,423
Gynecology/Electrosurgery/Urology
Sales, net	5,558		16,359
Neonatal
Sales, net	1,648		4,877
Blood Pressure Monitoring and Accessories
Sales, net	4,120		11,481
DomesticUsMember
Sales, net	7,749		22,555
DomesticUsMember | Obstetrics
Sales, net	1,014		2,864
DomesticUsMember | Gynecology/Electrosurgery/Urology
Sales, net	2,743		8,229
DomesticUsMember | Neonatal
Sales, net	1,336		3,813
DomesticUsMember | Blood Pressure Monitoring and Accessories
Sales, net	2,656		7,649
OutsideUsMember
Sales, net	4,823		13,585
OutsideUsMember | Obstetrics
Sales, net	232		559
OutsideUsMember | Gynecology/Electrosurgery/Urology
Sales, net	2,815		8,130
OutsideUsMember | Neonatal
Sales, net	312		1,064
OutsideUsMember | Blood Pressure Monitoring and Accessories
Sales, net	$ 1,464		$ 3,832