Construction loan payable (Tables)
 12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Summary of Construction Loan Payable
     2017      2016  

First advance

    $ 6,304      $ —    

Less: transaction costs (net of amortization)

      (1,122 )       —    

Add: accrued interest

      185        —    
  

 

 

     

 

 

  
   $ 5,367      $ —