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Stock-Based Compensation (Stock Options - Range of Exercise Prices) (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |  |  |  |  |
Options Outstanding, Vested | 24,000 |  |  |  |  |  |  |
Options Outstanding, Unvested (in shares) | 304,000 |  |  |  |  |  |  |
Weighted Average Exercise Price Per Share (in dollars per share) | $ 30.67 |  |  |  |  |  |  |
Weighted Average Remaining Contractual Life In Years | 4 years 8 months 19 days |  |  |  |  |  |  |
Options Exercisable, Number Exercisable | 24,000 |  |  |  |  |  |  |
Weighted Average Exercise Price Per Share (in dollars per share) | $ 16.96 |  |  |  |  |  |  |
Aggregate intrinsic value of outstanding options (in dollars) | $ 0.2 | [1] | $ 0.2 | [1] | $ 3.3 | [1] | $ 6.7 | [1]
Weighted-average remaining contractual life of vested and currently exercisable options (in years) | 3 months 29 days |  |  |  |  |  |  |
Aggregate intrinsic value of vested and currently exercisable options (in dollars) | $ 0.2 |  |  |  |  |  |  |
Shares Under Option |  |  |  |  |  |  |  |
Outstanding at the beginning of the period (in shares) | 589,000 |  |  |  |  |  |  |
Forfeited (in shares) | (285,000) |  |  |  |  |  |  |
Outstanding at the end of the period (in shares) | 304,000 |  |  |  |  |  |  |
Weighted Average Grant-Date Fair Value |  |  |  |  |  |  |  |
Outstanding at the beginning of the period (in dollars per share) | $ 10.90 |  |  |  |  |  |  |
Forfeited (in dollars per share) | $ 10.90 |  |  |  |  |  |  |
Outstanding at the end of the period (in dollars per share) | $ 10.90 |  |  |  |  |  |  |
Range of Exercisable Prices $16.96 - $16.96 |  |  |  |  |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |  |  |  |  |
Range of Exercisable Prices, low end of range (in dollars per share) | $ 16.96 |  |  |  |  |  |  |
Range of Exercisable Prices, high end of range (in dollars per share) | $ 16.96 |  |  |  |  |  |  |
Options Outstanding, Vested | 24,000 |  |  |  |  |  |  |
Options Outstanding, Unvested (in shares) | 0 |  |  |  |  |  |  |
Weighted Average Exercise Price Per Share (in dollars per share) | $ 16.96 |  |  |  |  |  |  |
Weighted Average Remaining Contractual Life In Years | 3 months 29 days |  |  |  |  |  |  |
Options Exercisable, Number Exercisable | 24,000 |  |  |  |  |  |  |
Weighted Average Exercise Price Per Share (in dollars per share) | $ 16.96 |  |  |  |  |  |  |
Range of Exercisable Prices $31.75 - $31.75 |  |  |  |  |  |  |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |  |  |  |  |  |
Range of Exercisable Prices, low end of range (in dollars per share) | $ 31.75 |  |  |  |  |  |  |
Range of Exercisable Prices, high end of range (in dollars per share) | $ 31.75 |  |  |  |  |  |  |
Options Outstanding, Vested | 0 |  |  |  |  |  |  |
Options Outstanding, Unvested (in shares) | 304,000 |  |  |  |  |  |  |
Weighted Average Exercise Price Per Share (in dollars per share) | $ 31.75 |  |  |  |  |  |  |
Weighted Average Remaining Contractual Life In Years | 5 years 0 months 26 days |  |  |  |  |  |  |
Options Exercisable, Number Exercisable | 0 |  |  |  |  |  |  |
Weighted Average Exercise Price Per Share (in dollars per share) | $ 0.00 |  |  |  |  |  |  |
[1] | Intrinsic value is defined as the difference between the current market value and the exercise price, for those options where the market price exceeds the exercise price.

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- Definition The number of shares under options that were cancelled during the reporting period as a result of the occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of non-vested options that were cancelled during the reporting period as a result of the occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of non-vested options that are outstanding as of the balance sheet date under the stock option plans. + References No definition available. + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding nonvested stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References No definition available. + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + 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 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -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 A240 -Subparagraph b(1)(c), d(2) -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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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -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 A240 -Subparagraph b(1)(c) -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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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding. + 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 A240 -Subparagraph d(1) -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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- Definition Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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