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Summary of Significant Accounting Policies (Details 2) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Condensed Income Statements, Captions [Line Items]    
Operating income/(loss) $ (6,100) $ (4,557)
Other income (expenses):    
Interest expense (1,610) (1,636)
Change in fair value of warrant liability (153) (42)
Gain on settlement of debt 872 1,008
Other income/(expense) 2 164
Total other income/(expense) (889) (506)
Income/(loss) before income taxes (6,989) (5,063)
Benefit/(provision) from income taxes 39 365
Net loss (7,256) (4,698)
Dividends on preferred stock (246) (463)
Net loss attributable to common shareholders $ (7,196) $ (5,161)
Net loss per common share - basic and diluted $ (0.10) $ (0.08)
Weighted average shares outstanding - basic and diluted 72,788 65,443
As previously reported [Member]    
Condensed Income Statements, Captions [Line Items]    
Operating income/(loss)   $ (4,557)
Other income (expenses):    
Interest expense   (1,908)
Change in fair value of warrant liability   (982)
Gain on settlement of debt   1,008
Other income/(expense)   164
Total other income/(expense)   (1,718)
Income/(loss) before income taxes   (6,275)
Benefit/(provision) from income taxes   365
Net loss   (5,910)
Dividends on preferred stock   463
Net loss attributable to common shareholders   $ (6,373)
Net loss per common share - basic and diluted   $ (0.09)
Net loss attributable to common shareholders   $ (0.1)
Weighted average shares outstanding - basic and diluted   65,443
As adjusted [Member]    
Condensed Income Statements, Captions [Line Items]    
Operating income/(loss)   $ (4,557)
Other income (expenses):    
Interest expense   (1,636)
Change in fair value of warrant liability   (42)
Gain on settlement of debt   1,008
Other income/(expense)   164
Total other income/(expense)   (506)
Income/(loss) before income taxes   (5,063)
Benefit/(provision) from income taxes   365
Net loss   (4,698)
Dividends on preferred stock   463
Net loss attributable to common shareholders   $ (5,161)
Net loss per common share - basic and diluted   $ (0.07)
Net loss attributable to common shareholders   $ (0.08)
Weighted average shares outstanding - basic and diluted   65,443