Stock-Based Compensation

6 Months Ended

Jun. 30, 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 and six months ended June 30, 2019. At June 30, 2019, there were 1.4 million shares remaining available for grant under the 2011 Plan.

The Company recognized stock-based compensation expense during the three and six months ended June 30, 2019 and 2018 as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	2019		2018		2019		2018
Employee awards:
Research and development expense	$	40	$	280	$	223	$	614
General and administrative expense		447		500		858		930
Total stock-based compensation expense	$	487	$	780	$	1,081	$	1,544