Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets

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Intangible Assets
3 Months Ended
Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets
3. Intangible Assets

 

The gross carrying amounts of intangible assets included within other long-term assets, the related accumulated amortization, the net carrying amounts and the weighted-average amortization periods of the Company’s intangible assets are listed in the following tables (in thousands, except amortization period):

 

    March 31, 2017  
    Gross Carrying
Amount
    Accumulated
Amortization
    Net Carrying
Amount
    Weighted-
Average
Amortization
Period (Years)
 
Customer relationships   $ 120,000     $ (44,161 )   $ 75,839       6.0  
Licenses     3,368       (989 )     2,379       5.6  
Non-compete agreements     660       (660 )           1.0  
Total intangible assets subject to amortization   $ 124,028     $ (45,810 )   $ 78,218          
License (Indefinite-lived)   $ 4,427     $     $          

 

    December 31, 2016  
    Gross Carrying
Amount
    Accumulated
Amortization
    Net Carrying
Amount
    Weighted-
Average
Amortization
Period (Years)
 
Customer relationships   $ 120,000     $ (36,593 )   $ 83,407       6.0  
Licenses     3,368       (807 )     2,561       5.6  
Non-compete agreements     660       (495 )     165       1.0  
Total intangible assets subject to amortization   $ 124,028     $ (37,895 )   $ 86,133          
License (Indefinite-lived)   $ 4,427     $     $          

 

The aggregate amortization expense is as follows (in thousands):

 

    Three months ended
March 31,
 
    2017     2016  
Amortization expense   $ 7,915     $ 5,389  

 

The following table sets forth the Company’s estimated aggregate amortization expense for each of the five years below (in thousands):

 

Year ended December 31,   Amortization
Expense
 
2018   $ 26,163  
2019     18,489  
2020     9,906  
2021     75  
2022     75