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Capital Stock and Equity Compensation (Time-Based Restricted Stock Awards) (Details) - Time-Based Restricted Stock Units
3 Months Ended
Mar. 31, 2021
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) 102,142
Awards granted (shares) 45,173
Stock issued (shares) (43,078)
Awards cancelled (shares) (627)
Awards outstanding ending balance (shares) 103,610