Stock-Based Compensation

3 Months Ended

Mar. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation

8. Stock-Based Compensation

The Company’s 2011 Stock Incentive Plan (the “2011 Plan”) is administered by the Company’s Board of Directors and permits the Company to grant incentive and non-qualified stock options, stock appreciation rights, restricted stock, restricted stock units and other stock-based awards.

There were no options granted during the three months ended March 31, 2019. At March 31, 2019, there were 0.8 million shares remaining available for grant under the 2011 Plan.

The Company recognized stock-based compensation expense during the three months ended March 31, 2019 and 2018 as follows:

	Three Months Ended March 31,
(in thousands)	2019		2018
Employee awards:
Research and development expense	$	183	$	334
General and administrative expense		411		430
Total stock-based compensation expense	$	594	$	764