Organization and Summary of Significant Accounting Policies - Revenue Recognition (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($)
Organization and Summary of Significant Accounting Policies
Warranty liability | $	$ 2.9	$ 2.2
Patient Care
Organization and Summary of Significant Accounting Policies
Labor warranty (in days)	90 days
Manufacturer warranty (in days)	180 days
Number of performance obligations | item	2
Period of recognition deferred revenue (in days)	90 days
Products & Services | Minimum
Organization and Summary of Significant Accounting Policies
Payment terms (in days)	30 days
Products & Services | Maximum
Organization and Summary of Significant Accounting Policies
Payment terms (in days)	90 days