Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Line Items]

Schedule of Property and Equipment Useful Lives [Table Text Block]

Property and equipment are carried at cost less accumulated depreciation. Depreciation is calculated utilizing the straight-line method over the estimated useful lives of the respective assets:

Lab equipment	5 years
Computer equipment	3 years
Leasehold improvements	Lesser of useful life or lease term
Software	3-5 years
Furniture and fixtures	5 years
Office equipment	5 years

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following potentially dilutive securities were excluded from the computation of diluted weighted average common shares outstanding due to their anti-dilutive effect:

	As of December 31,
	2019	2018
Vested and unvested stock options	4,428,985	3,130,700
Restricted stock units	125,000	—
Warrants	95,431	102,647
	4,649,416	3,233,347