Industry, Geographic and Revenue Disaggregation - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Net sales	$ 1,806	$ 1,692	$ 3,557	$ 2,493
Accelerate Pheno™ revenue
Disaggregation of Revenue [Line Items]
Net sales	1,777	1,665	3,483	2,435
Other revenue
Disaggregation of Revenue [Line Items]
Net sales	29	27	74	58
Products
Disaggregation of Revenue [Line Items]
Net sales	1,695	1,671	3,389	2,467
Services
Disaggregation of Revenue [Line Items]
Net sales	111	21	168	26
Domestic
Disaggregation of Revenue [Line Items]
Net sales	1,380	1,220	2,551	1,815
Foreign
Disaggregation of Revenue [Line Items]
Net sales	$ 426	$ 472	$ 1,006	$ 678