General form of registration statement for all companies including face-amount certificate companies

Summary of significant accounting policies - Additional Information (Details)

v2.4.0.8
Summary of significant accounting policies - Additional Information (Details) (USD $)
 9 Months Ended 12 Months Ended
Sep. 30, 2013
Segment
Sep. 30, 2012
Dec. 31, 2012
Segment
Dec. 31, 2011
Dec. 31, 2010
Jul. 22, 2013
Debt Instrument [Line Items]            
Cash, FDIC Insured Amount $ 250,000   $ 250,000      
Cash balances in bank accounts, uninsured amount 144,091   1,070,000 3,200,000 1,167,000  
Line of Credit Facility, Amount Outstanding           1,055,000
Allowance for doubtful accounts     154,400 96,800    
Advertising expense 147,000 133,000   86,700 14,900  
Research and development costs reimbursed by government agencies 115,150 101,400   239,000 917,000  
Noncontrolling Interest, Ownership Percentage by Parent     65.00%      
Loss on Contracts 300,000          
Research And Development Arrangements With Government Agencies, Retainage Receivable 138,350 154,700        
Number of Operating Segments 1   1      
Cash, Uninsured Amount 144,091   1,070,000 3,200,000 1,167,000  
segment [Member]
            
Debt Instrument [Line Items]            
Allowance for doubtful accounts 119,700   154,400      
Advertising expense     187,500      
Research and development costs reimbursed by government agencies     $ 126,500      
Ilios [Member]
            
Debt Instrument [Line Items]            
Noncontrolling Interest, Ownership Percentage by Parent 65.00%   65.00% 67.40% 63.00%  
Restricted stock | Ilios [Member]
            
Debt Instrument [Line Items]            
Noncontrolling Interest, Ownership Percentage by Parent 63.70%