Share-based Compensation

3 Months Ended

Mar. 31, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

(8) Share-based Compensation

For the three month periods ended March 31, 2018 and 2017, the Company recognized the following non-cash, share-based compensation expense in the statements of operations (in thousands):

	Three Months Ended March 31,
	2018		2017
Research and development	$	38	$	36
General and administrative		59		65
Total	$	97	$	101

Stock option transactions for the three month period ended March 31, 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		(10,042	)		7.54
Options outstanding at March 31, 2018		641,933		$	5.65		7.95
Options exercisable at March 31, 2018		393,106		$	7.51		7.41
Options vested and expected to vest		641,374		$	5.65		7.95

Stock award transactions related to restricted stock units for the three month period ended March 31, 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		(5,430	)		13.65
Forfeited and cancelled		—			—
Restricted stock units outstanding at March 31, 2018		9,738		$	4.75