Revenue from Contracts with Customers - Product and Product-Related Service Revenue from Sale of Instruments and Consumables (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	$ 3,202,825	$ 4,158,652
Product and Product-related Services
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	2,662,505	1,733,546
HTG EdgeSeq | RUO Instruments
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	47,866	11,358
HTG EdgeSeq | MDx Instruments
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	92,550
HTG EdgeSeq | RUO Consumables
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	304,231	205,813
HTG EdgeSeq | MDx Consumables
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	96,587	46,199
HTG EdgeSeq | Product revenue
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	541,234	263,370
HTG EdgeSeq | Custom RUO assay development
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	367,859	127,027
HTG EdgeSeq | RUO Sample processing
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	1,753,412	1,343,149
HTG EdgeSeq | Product-related services revenue
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	2,121,271	1,470,176
HTG EdgeSeq | Product and Product-related Services
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	$ 2,662,505	$ 1,733,546