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Property and Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
Schedule Of Property, Plant And Equipment, Net
Property and equipment, net consist of the following at year-end: 
 
 
2017
 
2016
Land
 
$
158,634

 
$
145,417

Buildings and leasehold improvements
 
633,747

 
605,156

Equipment
 
642,449

 
563,973

Total cost
 
1,434,830

 
1,314,546

Total accumulated depreciation
 
(544,094
)
 
(466,580
)
 
 
$
890,736

 
$
847,966