Stock-Based Compensation

9 Months Ended

Sep. 30, 2013

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 September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Research and development	$	155	$	245	$	709	$	803
Manufacturing and production		68		53		196		158
General and administrative		509		437		1,781		1,617

Total stock-based compensation expense	$	732	$	735	$	2,686	$	2,578

During the nine months ended September 30, 2013 and 2012, the Company granted stock-based awards with a total estimated value of $4.8 million and $3.9 million, respectively. At September 30, 2013, total unrecognized estimated compensation expense related to unvested stock-based awards granted prior to that date was $3.9 million, which is expected to be recognized over a weighted-average period of 1.3 years. Stock-based awards granted during the nine months ended September 30, 2013 and 2012, were equal to 3.8% and 2.2%, 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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