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Earnings Per Share (Details Textual)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Earnings Per Share (Textual) [Abstract]        
Weighted average diluted shares outstanding increased 21,000 55,000 18,000 55,000
Stock options not exercised 69,000 39,000 69,000 39,000