Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2016

Accounting Policies [Abstract]

Summary of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following common stock equivalents were excluded from the calculation of diluted net loss per share applicable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect or the exercise prices were greater than the average market price of the common shares.

	As of June 30,
	2016	2015
Stock options	2,205,774	2,060,334
Unvested restricted stock	31,010	71,310
Restricted stock units	77,133	211,400
Common stock warrants	926,840	926,840
	3,240,757	3,269,884