Controlled Launch (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) item	Sep. 30, 2021 USD ($)
Controlled Launch [Abstract]
Number of KOLs | item			70
Number of patients participating in procedure			40 or 50
Program expenses	$ 0	$ 600,000	$ 600,000	$ 1,200,000
Additional purchase agreements	$ 0
Revenue recognized			$ 400,000