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Geographic Information
 12 Months Ended
Dec. 31, 2017
Segments, Geographical Areas [Abstract]  
Geographic Information [Text Block]
Geographic Information

The table below presents revenues and properties information by geographic area:
 
 
U.S.
 
Canada
 
Other International
 
Total
2017
 
 
 
 
 
 
 
 
Revenues
 
$
1,154,873

 
$
50,431

 
$
18,104

 
$
1,223,408

Properties
 
1,226,714

 
36,213

 
132

 
1,263,059

 
 
 
 
 
 
 
 
 
2016
 
 
 
 
 
 
 
 
Revenues
 
$
1,373,345

 
$
45,959

 
$
16,114

 
$
1,435,418

Properties
 
1,162,006

 
30,257

 
76

 
1,192,339

 
 
 
 
 
 
 
 
 
2015
 
 
 
 
 
 
 
 
Revenues
 
$
1,749,131

 
$
104,003

 
$
17,163

 
$
1,870,297

Properties
 
1,198,553

 
29,296

 
95

 
1,227,944