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9. Fair Value of Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2019
Fair Value Disclosures [Abstract]  
Valuation of financial instruments at fair value

The following schedule summarizes the valuation of financial instruments at fair value on a recurring basis in the balance sheets as of March 31, 2019 and December 31, 2018:

 

    Fair Value Measurements at March 31, 2019  
    Level 1     Level 2     Level 3  
Assets                  
Restricted cash and investments held in trust   $ 142,027,742     $     $  
Cash and cash equivalents     826,525              
Total assets     142,854,267              
                         
Liabilities                  
Total liabilities                  
    $ 142,854,267     $     $  

  

    Fair Value Measurements at December 31, 2018  
    Level 1     Level 2     Level 3  
Assets                  
Restricted cash and investments held in trust   $ 141,307,307                  
Cash and cash equivalents     1,503,500     $     $  
Total assets     142,810,807              
                         
Liabilities                  
Total liabilities                  
    $ 142,810,807     $     $