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Intangible Assets, Net
 3 Months Ended
Mar. 31, 2019
Intangible Assets, Net [Abstract]  
Intangible Assets, Net

8.INTANGIBLE ASSETS, NET

The following table provides the gross and net carrying amounts for each major class of intangible assets:



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

As of March 31, 2019

 

As of December 31, 2018



 

Gross carrying

 

Accumulated

 

Net book

 

Gross carrying

 

Accumulated

 

Net book



 

amount

 

amortization

 

value

 

amount

 

amortization

 

value



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

(in thousands)

Current contract intangibles

 

$

 4,417,240 

 

$

 (1,998,596)

 

$

 2,418,644 

 

$

 4,394,416 

 

$

 (1,928,030)

 

$

 2,466,386 

Network location intangibles

 

 

 1,672,530 

 

 

 (832,222)

 

 

 840,308 

 

 

 1,669,859 

 

 

 (804,780)

 

 

 865,079 

Intangible assets, net

 

$

 6,089,770 

 

$

 (2,830,818)

 

$

 3,258,952 

 

$

 6,064,275 

 

$

 (2,732,810)

 

$

 3,331,465 



All intangible assets noted above are included in the Company’s site leasing segment. Amortization expense relating to the intangible assets above was $101.8 million and $100.3 million for the three months ended March 31, 2019 and 2018, respectively.