Stockholders' Equity And Stock-Based Compensation (Tables)
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12 Months Ended |
Dec. 31, 2015 |
Stockholders' Equity And Stock-Based Compensation [Abstract] |
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Stock Option Activity |
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Number of Options
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Weighted Average Exercise Price
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Weighted Average Remaining Contractual Term
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Aggregate Intrinsic Value
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In years
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In millions
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Outstanding as of December 31, 2014
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17,913,182
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$
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3.92
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5.0
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$
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0.5
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Granted
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2,210,000
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$
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1.90
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Exercised
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—
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$
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—
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Cancelled
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(1,607,928)
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$
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3.11
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Outstanding as of December 31, 2015
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18,515,254
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$
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3.75
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5.1
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$
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0.0
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Vested and expected to vest at December 31, 2015
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18,515,254
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$
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3.75
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5.1
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$
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0.0
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Exercisable at December 31, 2015
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13,315,572
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$
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4.20
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3.6
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$
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0.0
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Information About Stock Options Outstanding |
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Options outstanding
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Options exercisable
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Weighted
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average
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Weighted
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Weighted
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Number of
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remaining
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average
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Number of
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average
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Range of exercise prices
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outstanding
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contractual
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exercise
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vested
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exercise
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From
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To
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options
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life (in years)
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price
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options
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price
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$
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1.72
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$
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2.23
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3,830,000
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9.4
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$
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1.83
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489,165
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$
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1.75
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$
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2.33
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$
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3.34
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4,497,632
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5.4
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$
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2.74
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3,722,525
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$
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2.77
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$
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3.37
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$
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4.77
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3,760,591
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3.4
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$
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4.07
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3,562,060
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$
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4.04
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$
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4.80
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$
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5.00
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4,881,408
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3.0
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$
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4.89
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4,050,158
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$
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4.87
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$
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5.02
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$
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7.65
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1,545,623
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4.2
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$
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7.03
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1,491,664
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$
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7.09
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18,515,254
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5.1
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$
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3.75
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13,315,572
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$
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4.20
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Weighted Average Fair Value Of Options Granted |
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2015
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2014
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2013
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Volatility
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74% to 76%
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68% to 74%
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58% to 64%
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Risk-free interest rates
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1% to 2%
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1% to 2%
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1% to 2%
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Expected life of option
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7 years
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7 years
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7 years
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Dividend yield
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zero
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zero
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zero
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Forfeiture rate
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zero
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zero
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zero
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Weighted average fair value of stock options granted
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$1.29
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$2.32
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$1.54
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Performance Award activity |
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Number of Performance Awards
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Outstanding as of December 31, 2014
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1,889,465
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Granted
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50,000
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Exercised
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—
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Cancelled
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(50,000)
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Outstanding as of December 31, 2015
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1,889,465
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Summary Of Non-Cash Stock-Based Compenstion |
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Years ended December 31,
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2015
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2014
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2013
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Research and development
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$
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1,198
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$
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1,624
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$
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1,349
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General and administrative
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2,259
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2,137
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1,752
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$
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3,457
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$
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3,761
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$
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3,101
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