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Share-Based Compensation Schedule of Restricted Share Unit Transactions (Details) - Restricted Share Units (RSUs) [Member] - $ / shares
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unvested balance at beginning of period 18,034  
Shares granted 9,924  
Shares vested (6,012)  
Unvested balance at end of period 21,946  
Weighted average grant date fair value, beginning of period $ 10.12  
Weighted average grant date fair value, grants 16.98 $ 10.12
Weighted average grant date fair value, vested 10.12  
Weighted average grant date fair value, end of period $ 13.22