Acquisition Of Ascyrus (Purchase Price Allocation) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Purchase Price Allocation
Goodwill	$ 252,441	$ 260,061
Ascyrus Medical LLC [Member]
Consideration
Cash paid for acquisition	62,359
Common stock issued	20,000
Contingent consideration	55,407
Fair value of total consideration	137,766
Purchase Price Allocation
Cash and cash equivalents	4,017
Intangible assets	72,600
Net other assets/liabilities acquired	(1,267)
Goodwill	62,416
Net assets acquired	$ 137,766