Quarterly report pursuant to Section 13 or 15(d)

Organization and Description of Business Operations (Details Textual)

v3.19.1
Organization and Description of Business Operations (Details Textual) - USD ($)
3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Retained Earnings (Accumulated Deficit) $ (101,287,000) $ (95,397,000)
Common Stock [Member]    
Shares Issued, Price Per Share $ 4.05  
Stock Issued During Period Shares Common Shares For At The Market Offering 90,269  
Stock Issued During Period Value Common Shares For At The Market Offering Gross $ 365,000  
Stock Issued During Period Value Common Shares For At The Market Offering Net $ 355,000