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PROPERTY AND EQUIPMENT
12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
PROPERTY AND EQUIPMENT
PROPERTY AND EQUIPMENT
 
As of December 31, 2017 and 2016, property and equipment consisted of the following:
 
Range of Depreciable Lives
 
 
 
(Years)
 
2017
 
2016
 
 
 
 
 
 
 
 
 
(in thousands)
Land
N/A
 
$
2,742

 
$
6,159

Buildings
25-30
 
29,309

 
61,135

Equipment
2-20
 
280,774

 
224,460

Software
2-10
 
411,975

 
319,214

Leasehold improvements
3-15
 
63,154

 
40,158

Furniture and fixtures
3-7
 
24,054

 
15,913

 
 
 
812,008

 
667,039

Less accumulated depreciation and amortization
 
 
(314,336
)
 
(226,570
)
Work-in-progress
 
 
90,676

 
85,901

 
 
 
$
588,348

 
$
526,370