Industry, Geographic and Revenue Disaggregation - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 2,125	$ 1,806	$ 4,468	$ 3,557
Accelerate Pheno revenue
Disaggregation of Revenue [Line Items]
Net sales	2,093	1,777	4,398	3,483
Other revenue
Disaggregation of Revenue [Line Items]
Net sales	32	29	70	74
Products
Disaggregation of Revenue [Line Items]
Net sales	1,937	1,695	4,079	3,389
Services
Disaggregation of Revenue [Line Items]
Net sales	188	111	389	168
Domestic
Disaggregation of Revenue [Line Items]
Net sales	2,003	1,380	4,091	2,551
Foreign
Disaggregation of Revenue [Line Items]
Net sales	$ 122	$ 426	$ 377	$ 1,006