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Restructuring Charges and Asset Disposals (Details Textual) (USD $)
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 29, 2012
Mar. 31, 2012
Employee
May 31, 2011
Employee
Mar. 31, 2012
Sep. 30, 2011
Dec. 31, 2012
Branch
Dec. 31, 2011
Restructuring Charges and Asset Disposals (Textual) [Abstract]              
Restructuring charges and asset disposals (Note 21) $ 444,285     $ 495,207   $ 939,492 $ 2,986,441
Branches resulted in an earnings charge           1,800,000  
Comprised of lease termination expenses           1,200,000  
Lease liabilities charges 140,292         400,000  
Severance payments           200,000  
Write-off of leasehold improvements           600,000  
Severance expenses 247,163     445,429   600,000  
Total number of employees affected by reduction   12 18        
Term of period in which office vacant         2 years    
Asset disposals 56,830     39,445      
Lease liabilities       $ 10,333      
Number of branches           3