Revenue from Contracts with Customers - Product and Product-Related Service Revenue from Sale of Instruments and Consumables (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	$ 5,796,320	$ 4,910,766	$ 8,999,145	$ 9,069,418
Product and Product-related Services
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	4,424,368	2,023,312	7,086,873	3,756,858
HTG EdgeSeq | RUO Instruments
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	545,699	273,509	589,528	284,867
HTG EdgeSeq | MDx Instruments
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue			96,587
HTG EdgeSeq | RUO Consumables
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	735,008	587,440	1,043,276	793,253
HTG EdgeSeq | MDx Consumables
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	24,462	5,660	117,012	51,859
HTG EdgeSeq | Product revenue
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	1,305,169	866,609	1,846,403	1,129,979
HTG EdgeSeq | Custom RUO assay development
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	1,481,318	176,697	1,849,177	303,724
HTG EdgeSeq | RUO Sample processing
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	1,637,881	980,006	3,391,293	2,323,155
HTG EdgeSeq | Product-related services revenue
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	3,119,199	1,156,703	5,240,470	2,626,879
HTG EdgeSeq | Product and Product-related Services
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	$ 4,424,368	$ 2,023,312	$ 7,086,873	$ 3,756,858