Net loss per common stock (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Schedule of basic and diluted net loss per common stock

The Company excluded the following outstanding stock options and restricted stock units from the computation of basic and diluted net loss per common stock as the effect would have been antidilutive for all periods presented.

	THREE MONTHS ENDED MARCH 31,
	2020		2019
Outstanding stock options		5,344,927		2,633,197
Restricted stock units		134,000		—
		5,478,927		2,633,197