Stockholders' Equity (Summary Of The Option And Stock Appreciation Rights Activity) (Details) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Options/SARs, Exercised	0
Number of options/SARs, outstanding, December 31, 2012	373,899
Weighted average exercise price per share, granted	$ 4.32
Weighted Average Exercise Price per Share, Outstanding, December 31, 2012	$ 43.90
Range of Exercise Price, Lower limit		$ 10.00
$10.00 - $125.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options/SARs, outstanding, December 31, 2012		562,733
Weighted Average Exercise Price per Share, Outstanding, December 31, 2012		$ 48.53
Range of Exercise Price, Lower limit		$ 10.00
Range of Exercise Price, Upper limit		$ 125.50
$1.63 - $8.10 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Options/SARs, Granted	12,048
Weighted average exercise price per share, granted	$ 4.32
Range of Exercise Price, Lower limit	$ 1.63
Range of Exercise Price, Upper limit	$ 8.10
$0.00 - $0.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Options/SARs, Exercised
Weighted Average Exercise Price per Share, Exercised
Range of Exercise Price, Lower limit	$ 0.00
Range of Exercise Price, Upper limit	$ 0.00
$1.69 - $125.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Options/SARs, Forfeited	(200,882)
Weighted Average Exercise Price per Share, Forfeited	$ 54.51
Range of Exercise Price, Lower limit	$ 1.69
Range of Exercise Price, Upper limit	$ 125.50
$1.63 - $116.40 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options/SARs, outstanding, December 31, 2012	373,899
Weighted Average Exercise Price per Share, Outstanding, December 31, 2012	$ 43.90
Range of Exercise Price, Lower limit	$ 1.63
Range of Exercise Price, Upper limit	$ 116.40

The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period.

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-Name Statement of Financial Accounting Standard (FAS)

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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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The weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated during the reporting period due to noncompliance with plan terms during the reporting period.

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

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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 stock options awarded under the plan during the reporting period.

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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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The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

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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.

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

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