Basis of Presentation - Product Revenue from Sale of Instruments and Consumables (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Revenue Reconciling Item [Line Items]
Total product revenue	$ 407,177	$ 577,127	$ 948,321	$ 1,177,317
Instruments
Segment Reporting Revenue Reconciling Item [Line Items]
Total product revenue	148,479	3,119	171,058	82,300
Consumables
Segment Reporting Revenue Reconciling Item [Line Items]
Total product revenue	$ 258,698	$ 574,008	$ 777,263	$ 1,095,017