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Selling, general and administrative expenses
 6 Months Ended
Jun. 30, 2023
Selling, General and Administrative Expense [Abstract]  
Selling, general and administrative expenses Selling, general and administrative expenses
Selling, general and administrative expenses consisted of the following for the three and six months ended June 30, 2023 and 2022:
Three Months Ended June 30,Six Months Ended June 30,
2023202220232022
Personnel expenses$55,393 $44,795 $103,841 $89,862 
Share-based compensation21,806 26,879 48,669 54,381 
Travel expenses11,830 6,557 22,649 10,621 
Professional services10,110 7,626 19,003 16,567 
Office expenses5,328 7,018 11,770 13,067 
Other expenses15,270 11,997 24,409 17,849 
$119,737 $104,872 $230,341 $202,347