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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	$ 5,404,793	$ 4,706,378	$ 14,403,938	$ 13,775,796
Product and Product-related Services
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	4,311,043	1,314,844	11,397,916	5,071,702
HTG EdgeSeq | RUO Instruments
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	324,023	24,844	913,551	309,711
HTG EdgeSeq | MDx Instruments
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	90,468		187,055
HTG EdgeSeq | RUO Consumables
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	1,026,221	283,635	2,069,497	1,076,888
HTG EdgeSeq | MDx Consumables
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	32,165	144,264	149,177	196,123
HTG EdgeSeq | Product revenue
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	1,472,877	452,743	3,319,280	1,582,722
HTG EdgeSeq | Custom RUO assay development
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	2,129,251	262,044	3,978,428	565,768
HTG EdgeSeq | RUO Sample processing
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	708,915	600,057	4,100,208	2,923,212
HTG EdgeSeq | Product-related services revenue
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	2,838,166	862,101	8,078,636	3,488,980
HTG EdgeSeq | Product and Product-related Services
Disaggregation Of Revenue [Line Items]
Product and product-related services revenue	$ 4,311,043	$ 1,314,844	$ 11,397,916	$ 5,071,702