Share-based Compensation

6 Months Ended

Jun. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

(8) Share-based Compensation

For the three and six month periods ended June 30, 2018 and 2017, the Company recognized the following non-cash, share-based compensation expense in the statements of operations (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Research and development	$	28	$	44	$	66	$	80
General and administrative		32		75		91		140
Total	$	60	$	119	$	157	$	220

Stock option transactions for the six month period ended June 30, 2018 under the Company’s stock incentive plans were as follows:

	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in years)
Options outstanding at December 31, 2017		611,975		$	6.00		8.14
Granted		40,000			0.72
Exercised	—			—
Forfeited and cancelled		(26,576	)		4.58
Options outstanding at June 30, 2018		625,399		$	5.73		7.53
Options exercisable at June 30, 2018		428,387		$	7.07		7.08
Options vested and expected to vest		625,036		$	5.73		7.53

Stock award transactions related to restricted stock units for the six month period ended June 30, 2018 under the Company’s stock incentive plans were as follows:

	Number of Shares			Weighted Average Grant Date Fair Value
Restricted stock units outstanding at December 31, 2017		15,168		$	7.94
Granted		—			—
Vested and released		(14,935	)		7.98
Forfeited and cancelled		—			—
Restricted stock units outstanding at June 30, 2018		233		$	5.23