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Share-Based Compensation Schedule of Restricted Share Unit Transactions (Details) - Restricted Share Units (RSUs) [Member] - $ / shares
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years  
Unvested balance at beginning of period 42,675  
Shares granted 37,498  
Shares vested and paid (47,807)  
Unvested balance at end of period 32,366  
Weighted average grant date fair value, beginning of period $ 10.47  
Weighted average grant date fair value, grants 7.90 $ 9.55
Weighted average grant date fair value, vested 10.04  
Weighted average grant date fair value, end of period $ 8.13