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4. Rights Offering and Formation of Black Ridge Acquisition Corp. (Tables)
6 Months Ended
Jun. 30, 2017
Rights Offering And Formation Of Black Ridge Acquisition Corp.  
Schedule of deferred offering costs
   June 30,   December 31, 
   2017   2016 
Offering costs associated with BROG’s rights offering  $49,033   $ 
Offering costs associated with BRAC’s initial public offering   118,613     
Total prepaid offering costs  $167,646   $