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Stock-Based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2012
Stock-Based Compensation |
Schedule of assumptions used in estimation of fair value of the share-based payment awards on the grant date |
|  | Year Ended December 31, |
--- | --- | --- | ---
Employee stock options: |  | 2012 |  | 2011 |  | 2010 |
Risk-free interest rate |  |  | 0.2% - 0.8 | % |  | 0.2% - 1.7 | % |  | 0.6% - 2.1 | %
Volatility |  |  | 59.5% - 73.1 | % |  | 40.7% - 65.4 | % |  | 62.5% - 72.7 | %
Expected life (years) |  |  | 4.0 |  |  | 4.0 |  |  | 4.0 |
Dividend yield |  |  | 0 | % |  | 0 | % |  | 0 | %
Summary of activity under the Plans | A summary of activity under the Plans is presented below (in thousands, except exercise price):
|  | Shares Available for Grant |  | Number of Options outstanding |  | Weighted Average Exercise Prices |
--- | --- | --- | --- | --- | --- | --- | ---
Balance at December 31, 2009 |  |  | 1,875 |  |  | 5,450 |  | $ | 4.37 |
Additional authorized under the Amended 2000 Plan |  |  | 500 |  |  | — |  |  | — |
Additional authorized under the 2010 Plan |  |  | 4,000 |  |  | — |  |  | — |
Plan termination |  |  | (1,502 | ) |  | — |  |  | — |
Options cancelled prior to and upon termination of the Amended 2000 Plan |  |  | 487 |  |  | (487 | ) | $ | 4.31 |
Options cancelled and expired subsequent to termination of the Amended 2000 Plan |  |  | — |  |  | (401 | ) | $ | 2.98 |
Options granted |  |  | (1,690 | ) |  | 1,690 |  | $ | 4.47 |
Options exercised |  |  | — |  |  | (658 | ) | $ | 2.47 |
Options expired |  |  | (20 | ) |  | — |  |  | — |
Balance at December 31, 2010 |  |  | 3,650 |  |  | 5,594 |  | $ | 4.64 |
Additional authorized under the 2010 Plan |  |  | 500 |  |  | — |  |  | — |
Options granted |  |  | (2,201 | ) |  | 2,201 |  | $ | 4.13 |
Options cancelled |  |  | 28 |  |  | (28 | ) | $ | 4.23 |
Options exercised |  |  | — |  |  | (524 | ) | $ | 3.34 |
Options expired |  |  | — |  |  | (715 | ) | $ | 5.45 |
Balance at December 31, 2011 |  |  | 1,977 |  |  | 6,528 |  | $ | 4.48 |
Additional authorized under the 2010 Plan |  |  | 500 |  |  | — |  |  | — |
Options granted |  |  | (1,827 | ) |  | 1,827 |  | $ | 3.19 |
Options cancelled |  |  | 615 |  |  | (615 | ) | $ | 3.97 |
Options exercised |  |  | — |  |  | (266 | ) | $ | 2.38 |
Options expired |  |  | — |  |  | (602 | ) | $ | 6.89 |
Balance at December 31, 2012 |  |  | 1,265 |  |  | 6,872 |  | $ | 4.05 |
Summary of the inducement grant option activity | A summary of the inducement grant option activity is presented below (in thousands, except exercise price):
|  | Options Outstanding |
--- | --- | --- | ---
|  | Number of Shares |  | Weighted Average Exercise Prices |
Balance at December 31, 2009 |  |  | 5,295 |  | $ | 2.81 |
Granted |  |  | — |  |  | — |
Cancelled |  |  | (108 | ) | $ | 1.55 |
Exercised |  |  | (375 | ) | $ | 1.54 |
Balance at December 31, 2010 |  |  | 4,812 |  | $ | 2.92 |
Granted |  |  | 400 |  | $ | 6.06 |
Cancelled |  |  | (48 | ) | $ | 1.54 |
Exercised |  |  | (349 | ) | $ | 1.55 |
Balance at December 31, 2011 |  |  | 4,815 |  | $ | 3.29 |
Granted |  |  | 350 |  | $ | 3.92 |
Cancelled |  |  | (550 | ) | $ | 1.55 |
Exercised |  |  | (1,257 | ) | $ | 1.55 |
Balance at December 31, 2012 |  |  | 3,358 |  | $ | 4.29 |
Summary of restricted stock award and restricted stock unit activity | A summary of the restricted stock award and restricted stock unit activity is presented below (in thousands, except fair value):
|  | Number of Shares |  | Weighted Average Grant-Date Fair Value |
--- | --- | --- | --- | --- | ---
Non-vested shares at December 31, 2009 |  |  | 46 |  | $ | 1.60 |
Vested |  |  | (15 | ) | $ | 1.60 |
Non-vested shares at December 31, 2010 |  |  | 31 |  | $ | 1.60 |
Vested |  |  | (16 | ) | $ | 1.60 |
Non-vested shares at December 31, 2011 |  |  | 15 |  | $ | 1.60 |
Vested |  |  | (12 | ) | $ | 1.62 |
Cancelled |  |  | (3 | ) | $ | 1.55 |
Non-vested shares at December 31, 2012 |  |  | — |  |  | — |
Summary of significant ranges of outstanding and exercisable options and inducemenent grants, excluding restricted stock award and restricted stock unit activity | The following table summarizes significant ranges of outstanding and exercisable options and inducement grants, excluding restricted stock award and restricted stock unit activity, as of December 31, 2012 (in thousands, except contractual life and exercise price):
|  | Options Outstanding |  |  |  | Options Exercisable |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Range of Exercise Price |  | Number Outstanding |  | Weighted Average Remaining Contractual Life (in Years) |  | Weighted Average Exercise Price |  | Aggregate Intrinsic value |  | Number Exercisable |  | Weighted Average Remaining Contractual Life (in Years) |  | Weighted Average Exercise Price |  | Aggregate Intrinsic value |
$1.50 - $3.09 |  |  | 2,715 |  |  | 3.66 |  | $ | 2.33 |  | $ | 3,124 |  |  | 1,421 |  |  | 2.68 |  | $ | 1.93 |  | $ | 2,199 |
$3.10 - $3.92 |  |  | 2,864 |  |  | 4.44 |  | $ | 3.62 |  | $ | 213 |  |  | 1,159 |  |  | 3.69 |  | $ | 3.69 |  | $ | 38 |
$3.93 - $5.61 |  |  | 3,172 |  |  | 2.34 |  | $ | 4.97 |  |  | — |  |  | 2,828 |  |  | 2.20 |  | $ | 5.02 |  |  | — |
$5.62 - $9.81 |  |  | 1,479 |  |  | 2.61 |  | $ | 6.66 |  |  | — |  |  | 1,040 |  |  | 1.91 |  | $ | 6.93 |  |  | — |
|  |  | 10,230 |  |  | 3.32 |  | $ | 4.13 |  | $ | 3,337 |  |  | 6,448 |  |  | 2.53 |  | $ | 4.41 |  | $ | 2,237 |

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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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