Segment And Geographic Information (Narrative) (Details)	12 Months Ended
Dec. 31, 2020 USD ($) segment	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segment	2
Revenues	$ 253,227,000	$ 276,222,000	$ 262,841,000
Goodwill	260,061,000	186,697,000	188,781,000
Medical Devices [Member]
Segment Reporting Information [Line Items]
Revenues	179,299,000	197,246,000	187,394,000
Goodwill	260,100,000	186,700,000
Domestic [Member]
Segment Reporting Information [Line Items]
Revenues	138,274,000	150,553,000	$ 144,651,000
Germany {Member]
Segment Reporting Information [Line Items]
Long-lived assets	$ 15,100,000	$ 14,100,000
Percentage of revenue	10.00%	10.00%	10.00%
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	$ 0
Long-Lived Assets [Member] \| Geographic Concentration Risk [Member] \| Domestic [Member]
Segment Reporting Information [Line Items]
Concentration percentage	54.00%	57.00%
Long-Lived Assets [Member] \| Geographic Concentration Risk [Member] \| Germany {Member]
Segment Reporting Information [Line Items]
Concentration percentage	97.00%

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