XML 90 R27.htm IDEA: XBRL DOCUMENT

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Stock-Based Compensation, Activity

Information with respect to the number and weighted average exercise price of stock options under the 2006 Plan, 2010 Restated Plan and Inducement Plan is summarized as follows:



	Shares (in thousands)		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2012	9,901		$	2.64
Granted	5,257		$	2.16
Exercised	(291	)	$	1.97
Canceled/Forfeited	(1,338	)	$	2.70
Outstanding at December 31, 2013	13,529		$	2.46	8.3	$	15,266
Exercisable at December 31, 2013	5,617		$	2.73	7.6	$	5,484
Vested and unvested expected to vest at December 31, 2013	12,997		$	2.47	8.3	$	14,622

Schedule of Share-based Compensation, Additional Information



	Years Ended December 31,
	2013		2012		2011
Stock Options and Restricted Stock Units
Weighted-average grant date fair value	$	1.58	$	1.35	$	2.88
Aggregate intrinsic value of options exercised	$	370,000	$	9,000	$	226,000
Total fair value of shares vested	$	4,895,000	$	3,564,000	$	2,340,000

Assumptions used in the Black-Scholes Option-Pricing Model

The assumptions used in the Black-Scholes option-pricing model are as follows:



	Year Ended December 31,
	2013	2012	2011
Stock Options
Risk free interest rate	0.8% to 1.8%	0.2% to 1.2%	1.2% to 2.6%
Expected term	5.0 to 6.1 years	5.0 to 6.1 years	5.1 to 6.1 years
Expected volatility	82.8 to 87.9%	80.1% to 86.8%	72.3% to 89.7%
Expected dividend yield	—%	—%	—%
Employee Stock Purchase Plan
Risk free interest rate	0.1%	0.1%	0.1%
Expected term	0.5 to 1.0 years	0.5 to 1.0 years	0.5 to 1.0 years
Expected volatility	74.3% to 125.6%	81.5% to 85.7%	75.2% to 77.1%
Expected dividend yield	—%	—%	—%

Stock-Based Compensation Expense

The Company recognized stock-based compensation expense as follows (in thousands):



	Year Ended December 31,
	2013		2012		2012
Cost of sales	$	333	$	181	$	137
Research and development	1,138		921		768
Selling, general and administrative	6,535		5,055		3,904
Total	$	8,006	$	6,157	$	4,809

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

+ References+ Details

- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

+ References+ Details