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The Company (Tables)
 9 Months Ended
Sep. 30, 2017
The Company [Abstract]  
Fair Value Measurements on Recurring Basis
The Company's recurring fair value measurements at September 30, 2017 and December 31, 2016 are as follows:
  
Fair Value as of
September 30, 2017
  
Quoted Prices
in Active Markets
for Identical Assets
(Level 1)
  
Significant
other
Observable Inputs
(Level 2)
  
Significant
Unobservable
Inputs
(Level 3)
 
Liabilities:
            
Warrant liability (Note 8)
 
$
28
  
$
-
  
$
-
  
$
28
 
                 
  
Fair Value as of
December 31, 2016
  
Quoted Prices
in Active Markets
for Identical Assets
(Level 1)
  
Significant
other
Observable Inputs
(Level 2)
  
Significant
Unobservable
Inputs
(Level 3)
 
Liabilities:
                
Warrant liability (Note 8)
 
$
105
  
$
-
  
$
-
  
$
105
 
Calculation of Basic and Diluted Net Loss Per Share by Class of Security
The following table presents the calculation of basic and diluted net loss per share by each class of security for the three and nine months ended September 30, 2017:
  
For the Three Months
ended September 30, 2017
  
For the Three Months
ended September 30, 2017
 
  
Common stock
  
Series C Preferred stock
  
Common stock
  
Series C Preferred stock
 
             
Net loss
 
$ 
(8,235
)
 
$ 
(5,436
)
 
$ 
(13,835
)
 
$ 
(3,276
)
                 
Weighted average number of shares outstanding during the period
  
2,477,743
   
4,400
   
2,328,274
   
1,483
 
                 
Basic and Diluted net loss per share
 
$ 
(3.32
)
 
$ 
(1,235.43
)
 
$ 
(5.94
)
 
$ 
(2,208.96
)
Diluted Earnings per Common Share Calculated using Net Loss and Weighted Average Shares Outstanding
  
Nine Months Ended
September 30, 2016
 
    
Net loss
 
$ 
(2,448
)
Gain on the change in fair value of the warrant liability
  
(5,316
)
Diluted earnings
 
$ 
(7,764
)
     
Weighted average number of common and common equivalent shares outstanding:
    
Basic number of common shares outstanding
  
2,107,365
 
Effect of warrants
  
82,178
 
Diluted number of common and common stock equivalent shares outstanding
  
2,189,543
 
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
The weighted average of potential common stock equivalents outstanding during the three and nine months ended September 30, 2017 and 2016 consist of common stock equivalents of common stock purchase warrants, senior secured convertible debentures, convertible preferred stock and common stock options, which are summarized as follows:
  
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
  
2017
 
2016
 
2017
 
2016
Common stock equivalents of convertible debentures
 
7,546,299
 
8,541,577
 
8,191,777
 
8,561,343
Common stock purchase warrants
 
2,406,625
 
2,656,816
 
2,406,625
 
2,724,584
Common stock equivalents of convertible Preferred B stock
 
228,336
 
493,782
 
343,261
 
502,661
Common stock options
 
855,389
 
600,914
 
873,554
 
563,155
Total
 
11,036,649
 
12,293,089
 
11,815,217
 
12,351,743