Stock-Based Compensation

9 Months Ended

Sep. 30, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

2.	STOCK-BASED COMPENSATION

Total stock-based compensation expense was allocated to research and development, manufacturing and production and general and administrative expense as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2016		2015		2016		2015
Research and development	$	69	$	93	$	228	$	309
Manufacturing and production		25		42		89		123
General and administrative		119		302		487		1,102
Total stock-based compensation expense	$	213	$	437	$	804	$	1,534

During the nine months ended September 30, 2016 and 2015, the Company granted stock-based awards with a total estimated value of $0.6 million and $1.9 million, respectively. At September 30, 2016, total unrecognized estimated compensation expense related to unvested stock-based awards granted prior to that date was $0.8 million, which is expected to be recognized over a weighted-average period of 1.4 years. Stock-based awards granted during the nine months ended September 30, 2016 and 2015, were equal to 3.1% and 3.3%, respectively, of the outstanding shares of common stock at the end of the applicable period.

- 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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