Property and Equipment - Instruments at Cost and Accumulated Depreciation, Lessor (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Instruments at cost under operating leases	$ 2,884	$ 3,110
Accumulated depreciation under operating leases	(1,061)	(1,165)
Net property and equipment under operating leases	$ 1,823	$ 1,945