Net Loss Per Common Share (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Potential Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Common Share

The following potential common stock equivalents were not included in the calculation of diluted net loss per common share because the inclusion thereof would be antidilutive.

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2017		2016		2017		2016
Outstanding stock options		1,012,833		1,384,000		1,012,833		1,384,000
Unvested restricted stock		1,524,058		1,546,882		1,524,058		1,546,882
Total		2,536,891		2,930,882		2,536,891		2,930,882