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Stock Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2011
Stock-based Compensation [Abstract] |
Stock option transactions |
|  | Options |  |  | Weighted Average Exercise Price |  |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2010 |  |  | 98,701 |  |  | $ | 32.34 |  |  | $ | — |
Expired or Terminated |  |  | (73,500 | ) |  | $ | 32.61 |  |  |  |  |
Outstanding at December 31, 2011 |  |  | 25,201 |  |  | $ | 31.57 |  |  | $ | — |
Outstanding and exercisable options |
|  | Number Outstanding and Exercisable |  | Remaining Contractual Life |  |  | Exercise Price |
January 2002 Grants |  | 15,201 |  |  | 0.04 |  |  | $ | 30.53 |
May 2002 Grants |  | 10,000 |  |  | 0.37 |  |  | $ | 33.15 |
Summary of restricted stock award and restricted stock unit award transactions |
|  | Awards |  |  | Weighted Average Grant Date Fair Value |
Outstanding at December 31, 2010 |  |  | 1,674,892 |  |  | $ | 7.26 |
Issued |  |  | 292,339 |  |  | $ | 11.11 |
Forfeited |  |  | (51,024 | ) |  | $ | 11.59 |
Vested |  |  | (510,926 | ) |  | $ | 9.74 |
Outstanding at December 31, 2011 |  |  | 1,405,281 |  |  | $ | 7.00 |
Fair value of the performance awards I and the performance awards II at issuance |
|  | Performance Awards I |  |  | Performance Awards II |
Expected dividend yield |  |  | 0.0 | % |  |  | 0.0 | %
Expected stock volatility |  |  | 57.18% to 119.55 | % |  |  | 76.29% to 162.92 | %
Risk-free interest rate |  |  | 0.40% to 1.84 | % |  |  | 0.43% to 2.38 | %
Expected life (years) |  |  | 1-4 |  |  |  | 1-4 |
Grant Date Fair value |  | $ | 4.49 |  |  | $ | 2.94 |

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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 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 2: 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. Reference 3: 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 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (c)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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