Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Selling, general and administrative expenses

v3.19.3.a.u2
Selling, general and administrative expenses
12 Months Ended
Dec. 31, 2019
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 years ended December 31, 2019, 2018 and 2017:
 
Year Ended December 31,
 
2019
 
2018
 
2017
Personnel expenses
$
122,453

 
$
132,694

 
$
156,726

Share-based compensation
69,410

 
95,176

 
107,719

Professional services
24,287

 
24,264

 
28,585

Travel expenses
17,604

 
21,790

 
19,774

Office expenses
14,095

 
14,784

 
16,105

Directors’ expenses
3,042

 
3,169

 
3,345

Other expenses
16,567

 
13,349

 
16,037

 
$
267,458

 
$
305,226

 
$
348,291