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Share-Based Compensation (Narrative) (Details)
3 Months Ended
Mar. 31, 2021
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted-average grant date fair value per share $ 10.58
2017 Plan [Member] | Restricted Stock Awards [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares issued | shares 119,000
Weighted-average grant date fair value per share $ 10.58