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Warrants (Tables)
 12 Months Ended
Dec. 31, 2017
Warrants [Abstract]  
Warrants Fair Value Assumptions
A summary of quantitative information with respect to the valuation methodology and significant unobservable inputs used for the Company's warrant liabilities that are categorized within Level 3 of the fair value hierarchy as of December 31, 2017 and December 31, 2016 is as follows:
  
December 31, 2017
  
December 31, 2016
 
       
Number of shares underlying the warrants
  
403,090
   
403,090
 
Stock price
 
$
1.23
  
$
2.20
 
Volatility
  
48.60
%
  
47.00
%
Risk-free interest rate
  
1.76
%
  
1.22
%
Expected dividend yield
  
0
%
  
0
%
Expected warrant life
 
1.12 – 1.35 years
  
2.12 – 2.35 years
 
Schedule of Fair Value Hierarchy
Fair Value Measurements Using Significant Unobservable Inputs (Level 3):
 
 
Issuance Date
 
December 31, 2016
  
Decrease in Fair Value
  
December 31, 2017
 
          
10/31/2013
 
$
39
  
$ 
(37
)
 
$
2
 
2/5/2014
  
66
   
( 65
)
  
1
 
             
Total
 
$
105
  
$ 
(102
)
 
$
3
 

 
 
Issuance Date
 
December 31, 2015
  
Decrease in
Fair Value
  
Reclassification
to Equity
  
December 31, 2016
 
             
10/31/2013
 
$
379
  
$ 
(340
)
 
$
-
  
$
39
 
2/5/2014
  
715
   
(649
)
  
-
   
66
 
7/24/2014 Series A
  
2,415
   
(1,573
)
  
(842
)
  
-
 
7/24/2014 Series B
  
1,726
   
(1,713
)
  
(13
)
  
-
 
6/22/2015
  
1,807
   
(1,121
)
  
(686
)
  
-
 
                 
Total
 
$
7,042
  
$ 
(5,396
)
 
$ 
(1,541
)
 
$
105
 
Schedule of Warrants Subject to Remeasurement
Number of Warrants Subject to Remeasurement:
 
 
Issuance Date
December 31, 2017
 
    
 
10/31/2013
137,143
 
 
2/5/2014
265,947
 
    
 
Total
403,090