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Income Taxes - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Taxes [Line Items]      
Income tax net operating loss carryforwards $ 108,547,933    
Carryforward loss from expire 24,724,748    
Net deferred tax asset 0    
Federal income tax rate 34.00% 34.00% 34.00%
Tax benefits and (liabilities), prior to any valuation allowances, related to stock option plans 216,675 230,721  
General duration of carryback period 2 years    
Duration of carryback period to 2003 tax year 5 years    
Cash tax benefit 0    
Percentage of future alternative minimum taxable income 100.00%    
Original offsetting percentage of future alternative minimum taxable income 90.00%    
Net operating loss carryback period option one 3 years    
Net operating loss carryback period option two 4 years    
Net operating loss carryback period option three 5 years    
2023 Through 2028 [Member]
      
Income Taxes [Line Items]      
Income tax net operating loss carryforwards 43,000,000    
2029 Through 2032 [Member]
      
Income Taxes [Line Items]      
Income tax net operating loss carryforwards $ 65,000,000    
Start [Member]
      
Income Taxes [Line Items]      
Net operating loss carryforwards expiration year 2018    
End [Member]
      
Income Taxes [Line Items]      
Net operating loss carryforwards expiration year 2032