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Subsequent Events (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
Apr. 12, 2019
Apr. 08, 2019
Mar. 31, 2019
Warrants to purchase common stock     815,197
Subsequent Event [Member] | Underwriter Warrants [Member]      
Stock issued price per shares   $ 6.25  
Percentage for shares of common stock sold   7.00%  
Percentage for gross proceeds of offering   125.00%  
Subsequent Event [Member] | Underwriter Warrants [Member] | Maximum [Member]      
Warrants to purchase common stock   34,955  
Subsequent Event [Member] | Public Offering [Member]      
Number of public offering, shares 12,393 486,957  
Stock issued price per shares $ 5.00 $ 5.00  
Proceeds from public offering $ 47 $ 2,000  
Subsequent Event [Member] | Public Offering [Member] | Series B Preferred Stock and Series C Preferred Stock [Member]      
Conversion price per shares   $ 5.00