Share-Based Compensation (Share-Based Payment Award Activity) (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, January 1, 2012, shares	591
Granted, shares	18
Exercised, shares	0
Canceled and forfeited, shares	(186)
Outstanding, December 31, 2012, shares	423	591
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding, January 1, 2012, weighted average exercise price	$ 36.33
Granted, weighted average exercise price	$ 13.60
Exercised, weighted average exercise price	$ 0.00
Canceled and forfeited, weighted average exercise price	$ 36.02
Outstanding, December 31, 2012, weighted average exercise price	$ 35.52	$ 36.33
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, weighted average remaining contractual term	3 years 7 months 13 days
Outstanding, aggregate intrinsic value	$ 0
Vested and expected to vest, shares	414
Vested and expected to vest, weighted average exercise price	$ 35.70
Vested and expected to vest, weighted average remaining contractual term	3 years 6 months 11 days
Vested and expected to vest, aggregate intrinsic value	0
Exercisable, shares	362
Exercisable, weighted average exercise price	$ 37.26
Exercisable, weighted average remaining contractual term	2 years 10 months 10 days
Exercisable, aggregate intrinsic value	0
Exercisable, aggregate intrinsic value, per share	10.30
Total intrinsic value of stock options exercised	0	139,000	481,000
Cash received from stock options exercised	$ 0	$ 234,000	$ 995,000

Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Per Share

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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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.

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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.

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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.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise prices of fully vested and expected to vest options outstanding.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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Number of share options (or share units) exercised during the current period.

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