Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2018

Stock options

Schedule of total compensation cost recognized in the statement of operations

Total compensation cost recognized for all stock option awards in the statements of operations is as follows (in thousands):

	Three Months Ended
	March 31,
	2018		2017
Research and development	$	313	$	195
General and administrative		778		466
Total	$	1,091	$	661

Restricted stock

Schedule of total compensation cost recognized in the statement of operations

Total compensation cost recognized for all restricted stock awards in the statements of operations is as follows (in thousands):

	Three Months Ended
	March 31,
	2018		2017
Research and development	$	7	$	18
General and administrative		28		68
Total	$	35	$	86