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Share-Based Compensation (Narrative) (Details) - 2017 Plan [Member] - Restricted Stock Awards [Member]
9 Months Ended
Sep. 30, 2020
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Shares issued | shares 415,000
Weighted-average grant date fair value per share | $ / shares $ 2.65