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Long-term Debt (Tables)
 3 Months Ended
Mar. 31, 2016
Long-term Debt [Abstract]  
Key Assumptions Used to Value the Warrants under Long-term Debt
The key assumptions used to value the warrants are as follows:
  
December 31, 2015
  
January 29, 2016
 
       
Number of shares underlying warrants
  
650,442
   
99,057
 
Exercise price
 
$
1.13
  
$
1.06
 
Stock price on date of issuance
 
$
1.11
  
$
1.05
 
Fair value of warrants
 
$
321
  
$
47
 
Volatility
  
50.0
%
  
50.0
%
Risk-free interest rate
  
1.8
%
  
1.8
%
Expected dividend yield
  
0
%
  
0
%
Expected warrant life
 
5 years
  
5 years