Summary of Significant Accounting Policies (Details 5) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Total Revenues	$ 165,009	$ 147,591	$ 155,066
Other	24,005	19,139	21,026
Fluid Delivery [Member]
Total Revenues	77,753	75,228	72,117
Cardiovascular [Member]
Total Revenues	56,919	48,524	54,799
Ophthalmology [Member]
Total Revenues	$ 6,332	$ 4,700	$ 7,124