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Earnings Per Share (Details Textual) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Restricted Stock Awards        
Earnings Per Share Basic [Line Items]        
Anti-dilutive securities excluded from computation of earnings per share 0 0 0 0