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Restructuring Charges and Asset Disposals - Additional Information (Detail) (USD $)
 0 Months Ended 3 Months Ended 12 Months Ended
Oct. 31, 2013
Jul. 31, 2013
Jun. 13, 2013
Employees
May 29, 2013
Jun. 29, 2012
Branch
Sep. 23, 2011
May 16, 2011
Employees
Mar. 03, 2011
Branch
Mar. 31, 2012
Employees
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Restructuring And Related Activities [Abstract]                        
Restructuring charges and asset disposals         $ 444,285       $ 495,207 $ 521,903 $ 939,492 $ 2,986,441
Branches resulted in an earnings charge                   1,800,000    
Lease termination expense                   1,200,000    
Lease liabilities charges         140,292         400,000    
Severance payments                   200,000    
Write-off of leasehold improvements                   600,000    
Number of consolidated branches to reduce operating expenses               4        
Total number of employees affected by reduction     19       18   12      
Severance expenses 73,935 53,510 515,161   247,163       445,429 600,000    
Term of period in which office vacant           2 years            
Asset disposals         56,830       39,445      
Lease liabilities                 10,333      
Number of branches         3              
Operating cost reduction       $ 120,703