Commitments and Contingencies - Additional Information (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2017 USD ($)
Commitments And Contingencies [Line Items]
Lease expiration term		The Company leases office and laboratory space in Tucson, Arizona under two non-cancelable operating leases.
Lease equipment financing arrangement		$ 5,000
Lease expiration date of lease payments not in schedule		2017-12
Computer Equipment
Commitments And Contingencies [Line Items]
Capital lease commitments	$ 103,000	$ 103,000
Computer Equipment | Minimum
Commitments And Contingencies [Line Items]
Capital lease commitment period		36 months
Computer Equipment | Maximum
Commitments And Contingencies [Line Items]
Capital lease commitment period		48 months
Non-Executive Officer Employees
Commitments And Contingencies [Line Items]
Compensation expenses	$ 87,965	$ 87,965