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Stockholders' Equity (Detail Textuals 1) - $ / shares
 1 Months Ended 6 Months Ended 12 Months Ended
Jul. 31, 2017
Jun. 30, 2019
Dec. 31, 2017
Dec. 31, 2018
Series A convertible preferred stock        
Class of Stock [Line Items]        
Preferred stock, shares issued 8,872 264   264
Preferred stock, shares outstanding   264   264
Number of shares issued upon conversion 4,304,000      
Number of shares converted   132,000 8,608  
Price per share used to determine number of shares of common stock $ 1,000      
Conversion price of convertible preferred stock $ 2.00      
Percentage of blocker provision 4.99%      
Conversion percentage 9.99%      
Condition related to events occurrence for conversion of preferred stock   (i) the volume weighted average price of our common stock for 30 consecutive trading days (the "Measurement Period") exceeds 300% of the initial conversion price of the Series A Preferred Stock (subject to adjustment for forward and reverse stock splits, recapitalizations, stock dividends and similar transactions), (ii) the daily trading volume on each Trading Day during such Measurement Period exceeds $500,000 per trading day and (iii) the holder is not in possession of any information that constitutes or might constitute, material non-public information which was provided by the Company.    
6% Convertible Exchangeable Preferred Stock        
Class of Stock [Line Items]        
Preferred stock, shares issued   335,273   335,273
Preferred stock, shares outstanding   335,273   335,273
Number of trading days during which closing price of common stock must exceed conversion price for at least 20 days in order for the preferred stock to be convertible   30 days    
Dividend rate on convertible exchangeable preferred stock (in percent)   6.00%    
Share issue price per share   $ 10.00    
Liquidation preference (in dollars per share)   10.00    
Share Price   $ 2,961    
Percentage of closing sales price of common stock that conversion price must exceed in order for preferred stock to be convertible   150.00%    
Number of trading days within 30 trading days in which the closing price of common stock must exceed conversion price for preferred stock to be convertible   20 days    
Number of trading days prior to notice of automatic conversion   5 days    
Redemption price per share (in dollars per share)   $ 10.00    
Interest rate of Convertible Subordinated Debentures (as a percent)   6.00%    
Debt principal amount per share, basis for exchange (in dollars per share)   $ 10.00    
Debt instrument, term   25 years