Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 17,770	$ 16,014
Accumulated depreciation	(9,865)	(8,711)
Net property and equipment	7,905	7,303
Instruments reclassified from inventory		1,900
Depreciation expense	2,300	2,500	$ 2,200
Inventory transfers
Property, Plant and Equipment [Line Items]
Instruments reclassified from inventory		100
Computer equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	2,477	2,700
Technical equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	3,681	3,868
Facilities
Property, Plant and Equipment [Line Items]
Total property and equipment	3,883	4,037
Instruments
Property, Plant and Equipment [Line Items]
Total property and equipment	7,491	5,318
Capital projects in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	238	$ 91
Assets leased to others
Property, Plant and Equipment [Line Items]
Total property and equipment	4,600
Accumulated depreciation	$ (800)