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Cash and cash equivalents (Tables)
 12 Months Ended
Dec. 31, 2018
Cash and cash equivalents  
Schedule of cash and cash equivalents

                                                                            

 

 

 

 

 

 

 

                                                                                                                                   

 

December 31, 

 

    

2018

    

2017

Cash and cash equivalents:

 

 

 

 

 

 

Cash

 

$

11,689

 

$

24,430

Money market accounts

 

 

137,723

 

 

2,255

Total cash and cash equivalents

 

$

149,412

 

$

26,685