Segment Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2021 USD ($) segment	Mar. 31, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	2
Revenues	$ 71,087,000	$ 66,429,000
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	0
Operating Segments [Member] | Medical Devices [Member]
Segment Reporting Information [Line Items]
Revenues	$ 53,345,000	$ 46,420,000