Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets

v3.19.3
Intangible Assets
 9 Months Ended
Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Intangible Assets

Intangible Assets Subject to Amortization
 
September 30, 2019
 
December 31, 2018
 
Gross
    
 
    
Net
    
Gross
    
 
    
Net
 
carrying
 
Accumulated
 
carrying
 
carrying
 
Accumulated
 
carrying
 
amount
 
amortization
 
amount
 
amount
 
amortization
 
amount
 
amounts in thousands
Customer relationships
$
408,267

 
(85,229
)
 
323,038

 
408,267

 
(55,417
)
 
352,850

Other amortizable intangibles
131,830

 
(55,825
)
 
76,005

 
122,759

 
(39,603
)
 
83,156

Total
$
540,097

 
(141,054
)
 
399,043

 
531,026

 
(95,020
)
 
436,006



Amortization expense for intangible assets with finite useful lives was $15.2 million and $17.1 million for the three months ended September 30, 2019 and 2018, respectively. Amortization expense for intangible assets with finite useful lives was $46.5 million and $38.7 million for the nine months ended September 30, 2019 and 2018, respectively. Amortization expense for amortizable intangible assets for each of the five succeeding fiscal years is estimated to be (amounts in thousands):
Remainder of 2019
$
15,448

2020
$
52,633

2021
$
42,250

2022
$
36,496

2023
$
33,603