Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 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				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Research and development	$	503	$	175	$	816	$	370
General and administrative		828		489		1,607		955
Total	$	1,331	$	664	$	2,423	$	1,325

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				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Research and development	$	5	$	31	$	12	$	49
General and administrative		11		77		40		145
Total	$	16	$	108	$	52	$	194