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Stock-Based Compensation Narrative (Details)
3 Months Ended 3 Months Ended 0 Months Ended
Mar. 31, 2014
Mar. 31, 2014
Directors' Plan [Member]
Mar. 31, 2014
Employee Stock Option [Member]
Apr. 01, 2014
Performance Shares [Member]
Apr. 01, 2014
Restricted Stock Units (RSUs) [Member]
Apr. 01, 2014
Employee Stock Option [Member]
Statement [Line Items]            
Share Based Compensation Arrangement By Share Based Payment Award Options Expiration Term 10 years          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 1     3 years      
Shares reserved for future grants under the stock option and compensation plan   438,000 11,000,000      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures       389,000 96,000 289,000