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Capital Stock and Equity Compensation (Performance-Based Restricted Stock Awards) (Details) - Performance-Based Restricted Stock Units
3 Months Ended
Mar. 31, 2020
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Awards outstanding beginning balance (shares) 106,943
Awards granted (shares) 87,244
Stock issued (shares) (75,486)
Awards forfeited (shares) (774)
Awards outstanding ending balance (shares) 117,927