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Line of Credit and Debt - Loan and Security Agreement With Cherokee Financial, LLC (Details Textual) - USD ($)
1 Months Ended 3 Months Ended
Apr. 30, 2015
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Mar. 25, 2015
Line of Credit Facility [Line Items]          
Interest Expense, Debt     $ 5,000    
Debt Instrument, Unamortized Discount   $ 758,000   $ 909,000  
Cherokee Financial LLC [Member]          
Line of Credit Facility [Line Items]          
Placement Agent Fees   $ 60,000      
Debt Instrument, Interest Rate, Stated Percentage   8.00%   8.00%  
Debt Instrument, Face Amount   $ 1,200,000      
Interest Expense, Debt   24,000 1,000    
Interest Payable   $ 13,000 $ 10,000    
Annual Fee Percentage   1.00%      
Debt Instrument, Annual Principal Payment   $ 75,000      
Debt Instrument, Term   5 years      
Administrative Fees Percentage   1.00%      
Cherokee Financial LLC [Member] | Final Balloon [Member]          
Line of Credit Facility [Line Items]          
Debt Instrument, Maturity Date   Mar. 26, 2020      
Cherokee Loan and Security Agreement [Member]          
Line of Credit Facility [Line Items]          
Placement Agent Fees   $ 60,000      
Proceeds from Debt, Net of Issuance Costs   80,000      
Repayments of Debt   1,015,000      
Legal Fees   19,000      
Debt Issuance Cost   19,000      
State Filing Fees   3,000      
Debt Instrument, Periodic Payment, Interest   4,000      
Notes and Loans, Noncurrent   $ 1,125,000   $ 1,200,000  
Cherokee Loan and Security Agreement [Member] | New Participations [Member]          
Line of Credit Facility [Line Items]          
Contingent Consideration Additional Restricted Shares Issuable   196,000      
Debt Instrument, Interest Rate, Stated Percentage         8.00%
Debt Instrument, Face Amount         $ 511,000
Cherokee Loan and Security Agreement [Member] | Series A Debentures and CAM Bridge Loan [Member]          
Line of Credit Facility [Line Items]          
Debt Instrument, Periodic Payment, Interest $ 15,000        
Debt Instrument, Interest Rate, Stated Percentage 15.00%        
Debt Instrument, Face Amount $ 689,000        
Cherokee Loan and Security Agreement [Member] | Cherokee Financial LLC [Member]          
Line of Credit Facility [Line Items]          
Contingent Consideration Additional Restricted Shares Issuable   600,000      
Stock Issued During Period, Shares, Restricted Stock Award, Gross   1,800,000      
Cherokee Loan and Security Agreement [Member] | Cantone Research Inc [Member]          
Line of Credit Facility [Line Items]          
Stock Issued During Period, Shares, Restricted Stock Award, Gross   200,000