Inventory - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Inventory [Line Items]
Reserve for shrinkage and excess raw material inventory	$ 39,403		$ 39,403
Net change in inventory valuation reserves	0	$ 1,801
Provision for excess inventory	24,296	$ 11,280
Finished goods inventory	282,501		284,444
HTG EdgeSeq
Inventory [Line Items]
Finished goods inventory	$ 57,788		$ 143,271