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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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 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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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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Stock Compensation Plans (Options Based On Range Of Exercise Price) (Details) (USD $) In Thousands, except Per 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]
Outstanding, Shares	33	33	33	2
Outstanding, Weighted Average Remaining Contractual Term	7 years 2 months 1 day
Outstanding, Weighted Average Exercise Price	$ 3,680.09	$ 3,680.09	$ 3,680.09	$ 35,475.00
Exercisable, Shares	33
Exercisable, Weighted Average Exercise Price	$ 3,680.09
Stock Options [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower limit	$ 3,600.0
Range of exercise prices, upper limit	$ 35,475.0
Stock Options [Member] \| $ 3,600.00 - 35,475.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding, Shares	33
Outstanding, Weighted Average Remaining Contractual Term	7 years 2 months 1 day
Outstanding, Weighted Average Exercise Price	$ 3,680.09
Exercisable, Shares	33
Exercisable, Weighted Average Exercise Price	$ 3,680.09