Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock-Based Compensation Expense Related to Company's Stock-Based Awards

The following table summarizes stock-based compensation expense related to the Company’s stock-based awards for the periods indicated (in thousands):

	Three months ended March 31,
	2016		2015
Research and development	$	550	$	699
General and administrative		893		1,157
Employee stock-based compensation expense		1,443		1,856
Non-employee stock-based compensation expense		10		108
Total stock-based compensation expense	$	1,453	$	1,964