Industry, Geographic, and Revenue Disaggregation - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 3,470	$ 2,271	$ 1,806	$ 1,750	$ 1,822	$ 1,355	$ 1,692	$ 801	$ 9,297	$ 5,670	$ 4,177
Accelerate Pheno™ revenue
Disaggregation of Revenue [Line Items]
Net sales									9,132	5,547	4,057
Other revenue
Disaggregation of Revenue [Line Items]
Net sales									165	123	120
Products
Disaggregation of Revenue [Line Items]
Net sales									8,839	5,576	4,157
Services
Disaggregation of Revenue [Line Items]
Net sales									458	94	20
Domestic
Disaggregation of Revenue [Line Items]
Net sales									6,705	4,153	3,016
Foreign
Disaggregation of Revenue [Line Items]
Net sales									$ 2,592	$ 1,517	$ 1,161