XML 31 R15.htm IDEA: XBRL DOCUMENT v3.10.0.1
Intangible Assets, Net
 12 Months Ended
Dec. 31, 2018
Intangible Assets, Net [Abstract]  
Intangible Assets, Net

7.INTANGIBLE ASSETS, NET

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





 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

As of December 31, 2018

 

As of December 31, 2017



 

Gross carrying

 

Accumulated

 

Net book

 

Gross carrying

 

Accumulated

 

Net book



 

amount

 

amortization

 

value

 

amount

 

amortization

 

value



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 



 

(in thousands)

Current contract intangibles

 

$

 4,394,416 

 

$

 (1,928,030)

 

$

 2,466,386 

 

$

 4,355,171 

 

$

 (1,673,270)

 

$

 2,681,901 

Network location intangibles

 

 

 1,669,859 

 

 

 (804,780)

 

 

 865,079 

 

 

 1,617,441 

 

 

 (701,211)

 

 

 916,230 

Intangible assets, net

 

$

 6,064,275 

 

$

 (2,732,810)

 

$

 3,331,465 

 

$

 5,972,612 

 

$

 (2,374,481)

 

$

 3,598,131 



All intangible assets noted above are included in the Company’s site leasing segment. The Company amortizes its intangible assets using the straight-line method over 15 years. Amortization expense relating to the intangible assets above was $402.6 million, $384.1 million, and $369.9 million for the years ended December 31, 2018,  2017 and 2016, respectively.

Estimated amortization expense on the Company’s intangibles assets is as follows:





 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

For the year ended December 31,

 

 

 

 

 

 

 

(in thousands)



 

 

 

 

 

 

 

 

 

2019

 

 

 

 

 

 

 

$

 403,371 

2020

 

 

 

 

 

 

 

 

 402,447 

2021

 

 

 

 

 

 

 

 

 369,864 

2022

 

 

 

 

 

 

 

 

 349,657 

2023

 

 

 

 

 

 

 

 

 327,181