Annual report pursuant to Section 13 and 15(d)

Organization and Nature of Operations and Basis of Presentation (Details Textual)

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Organization and Nature of Operations and Basis of Presentation (Details Textual) - USD ($)
$ in Thousands, shares in Millions
1 Months Ended 12 Months Ended
Oct. 15, 2018
Aug. 10, 2018
Dec. 31, 2018
Dec. 31, 2017
Feb. 28, 2019
Dec. 31, 2016
Cash and Cash Equivalents, at Carrying Value     $ 28,918 $ 17,116 $ 26,000 $ 19,055
Proceeds from Issuance Initial Public Offering $ 16,700          
Proceeds from Issuance or Sale of Equity     $ 12,172 $ 6,358    
Stock Issued During Period, Shares, Reverse Stock Splits   128.5 3.7