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Acquired Intangible Assets (Tables)
3 Months Ended
Mar. 31, 2019
Acquired Intangible Assets [Abstract]  
Acquired Identifiable Intangible Assets
Acquired identifiable intangible assets consist of the following:

  
March 31,
2019
  
December 31,
2018
 
  
(In thousands)
 
Customer relationships
 
$
87,256
  
$
87,195
 
Trademarks and trade names
  
6,800
   
6,800
 
Non-compete agreements
  
3,193
   
3,193
 
Patents
  
723
   
723
 
Supply agreements
  
800
   
800
 
Leaseholds
  
160
   
160
 
Total acquired intangible assets
  
98,932
   
98,871
 
Less accumulated amortization (1)
  
(53,184
)
  
(51,391
)
Net acquired intangible assets
 
$
45,748
  
$
47,480
 


(1)
Applies to all intangible assets, except for trademarks and trade names totaling $5.2 million, which have indefinite useful lives and, as such, are not being amortized.