Share-based Compensation

3 Months Ended

Mar. 31, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

(8) Share-based Compensation

For the three month periods ended March 31, 2017 and 2016, the Company recognized the following non-cash, share-based compensation expense in the statements of operations (in thousands):

	Three Months Ended March 31,
	2017		2016
Research and development	$	36	$	42
General and administrative		65		113
Total	$	101	$	155

Stock option transactions for the three month period ended March 31, 2017 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, 2016		629,629		$	6.30		8.86
Granted		469,600			2.54
Exercised	—			—
Forfeited and cancelled		(272,612	)		3.34
Options outstanding at March 31, 2017		826,617		$	5.14		9.14
Options exercisable at March 31, 2017		209,658		$	11.83		7.46
Options vested and expected to vest		824,931		$	5.15		9.14

Stock award transactions related to restricted stock units for the three month period ended March 31, 2017 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, 2016		30,739		$	7.91
Granted		—			—
Vested and released		(5,434	)		13.65
Forfeited and cancelled		(400	)		6.03
Restricted stock units outstanding at March 31, 2017		24,905		$	6.69

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

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