Revenue from Contracts with Customers - Product and Product-Related Service Revenue from Sale of Instruments and Consumables (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	$ 4,706,378	$ 3,723,484	$ 13,775,796	$ 6,855,409
Product and Product-related Services
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	1,314,844	1,592,790	5,071,702	4,422,304
HTG EdgeSeq | Instrument
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	24,844	199,205	309,711	370,263
HTG EdgeSeq | Consumables
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	427,899	426,400	1,273,011	1,203,663
HTG EdgeSeq | Product revenue
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	452,743	625,605	1,582,722	1,573,926
HTG EdgeSeq | Custom RUO assay design
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	262,044	73,567	565,768	419,515
HTG EdgeSeq | Sample processing
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	600,057	893,618	2,923,212	2,428,863
HTG EdgeSeq | Product-related services revenue
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	862,101	967,185	3,488,980	2,848,378
HTG EdgeSeq | Product and Product-related Services
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	$ 1,314,844	$ 1,592,790	$ 5,071,702	$ 4,422,304