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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]        
Common stock issuable on conversion 834,000 1,144,000 834,000 1,144,000
Series B preferred stock [Member]
       
Earnings Per Share (Textual) [Abstract]        
Common stock issuable on conversion 897,000 1,235,000 897,000 1,235,000
Convertible preferred stock [Member]
       
Earnings Per Share (Textual) [Abstract]        
Common stock issuable on conversion 5,148,000 5,148,000 5,148,000 5,148,000