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Share-Based Compensation Share-Based Compensation - Liability Classified Valuation Table (Details) (Performance Shares [Member])
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6 Months Ended |
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Jun. 30, 2014
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Performance Shares [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 41.37% |
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | 0.76% |
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate | 1.36% |