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Earnings Per Share (Details Textual) - shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Restricted Stock Awards      
Earnings Per Share Basic [Line Items]      
Anti-dilutive securities excluded from computation of earnings per share 0   0
Common stock      
Earnings Per Share Basic [Line Items]      
Anti-dilutive securities excluded from computation of earnings per share   193,105