Basic and Diluted Loss per Common Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Summary of Securities Excluded From Calculation of Weighted Average Common Shares

The following potentially dilutive securities outstanding, prior to the use of the treasury stock method or the if-converted method, have been excluded from the computation of diluted weighted-average shares outstanding for the respective periods below because they would have been anti-dilutive:

	Three Months Ended March 31,
	2020	2019
Stock options	4,308,009	4,506,244
Non-vested restricted stock units	1,069,168	963,055