Industry, Geographic and Revenue Disaggregation - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Net sales	$ 1,822	$ 1,355	$ 1,692	$ 801	$ 2,120	$ 828	$ 699	$ 530	$ 5,670	$ 4,177	$ 246
Accelerate Pheno™ revenue
Disaggregation of Revenue [Line Items]
Net sales									5,547	4,057	163
Other revenue
Disaggregation of Revenue [Line Items]
Net sales									123	120	83
Products
Disaggregation of Revenue [Line Items]
Net sales									5,576	4,157	246
Services
Disaggregation of Revenue [Line Items]
Net sales									94	20	0
Domestic
Disaggregation of Revenue [Line Items]
Net sales									4,153	3,016	238
Foreign
Disaggregation of Revenue [Line Items]
Net sales									$ 1,517	$ 1,161	$ 8