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Earnings Per Share (Details Textual)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Disclosure Earnings Per Share Details Textual [Line Items]        
Stock options not considered in computing of diluted earnings per share 0 5,000 0 5,000