Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details Textual)

v3.10.0.1
Stockholders' Equity (Details Textual) - $ / shares
 6 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Apr. 10, 2017
Preferred Stock, Shares Authorized 1,000,000 1,000,000  
Common Class A [Member]      
Common Stock, Shares Authorized 200,000,000 200,000,000  
Common Stock, Par or Stated Value Per Share $ 0.0001 $ 0.0001  
Common Stock, Shares, Issued 1,132,765 1,184,037  
Common Stock, Shares, Outstanding 1,132,765 1,184,037  
Temporary Equity, Shares Authorized 21,867,235 21,815,963  
Common Class B [Member]      
Common Stock, Shares Authorized 20,000,000 20,000,000  
Common Stock, Par or Stated Value Per Share $ 0.0001 $ 0.0001 $ 0.0001
Common Stock, Shares, Issued 5,750,000 5,750,000  
Common Stock, Shares, Outstanding 5,750,000 5,750,000  
Conversion of Stock, Description so that the number of shares of Class A common stock issuable upon conversion of all shares of Class B common stock will equal, in the aggregate, on an as-converted basis, 20% of the sum of the total number of all shares of common stock outstanding upon the completion of the Initial Public Offering