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Income (Loss) Per Share - Additional Information (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Income Per Share (Textual) [Abstract]        
Additional dilutive shares related to share-based compensation 143,000 275,000 164,000 342,000
Stock options        
Income Per Share (Textual) [Abstract]        
Common stock shares effect would be anti-dilutive     4,897 27,000