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Share-Based Compensation (Policies)	9 Months Ended
Share-Based Compensation (Policies)	Sep. 30, 2012
Share-based Compensation [Abstract]
Share-based Compensation	The fair value of the stock options granted during the three and nine month periods ended September 30, 2012 and 2011 was estimated on the date of grant using the Black-Scholes option pricing model

Disclosure of accounting policy for stock option and stock incentive plans. This disclosure may include (1) the types of stock option or incentive plans sponsored by the entity (2) the groups that participate in (or are covered by) each plan (3) significant plan provisions and (4) how stock compensation is measured, and the methodologies and significant assumptions used to determine that measurement.

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