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Property and Equipment - Instruments at Cost and Accumulated Depreciation, Lessor (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Abstract]    
Instruments at cost under operating leases $ 3,110 $ 3,750
Accumulated depreciation under operating leases (1,165) (1,120)
Net property and equipment under operating leases $ 1,945 $ 2,630