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Goodwill and other Intangible Assets
12 Months Ended
Dec. 31, 2016
Goodwill and other Intangible Assets [Abstract]  
Goodwill and other Intangible Assets
7.          Goodwill and Other Intangible Assets
 
A summary of goodwill is as follows as of December 31, 2016 and 2015:

(In thousands)
   
January 1, 2016
 
$
265,957
 
Goodwill Acquired
  
2,047
 
Goodwill Adjustments
  
(2,565
)
December 31, 2016
 
$
265,439
 
 
    
January 1, 2015
 
$
263,634
 
Goodwill Acquired
  
2,323
 
December 31, 2015
 
$
265,957
 
 
The Company has intangible assets with definite useful lives capitalized on its consolidated balance sheet in the form of core deposit and other identified intangible assets.  These intangible assets are amortized over their estimated useful lives, which range primarily from one to twenty years.

During the twelve month period ended December 31, 2016, as a result of the disposition of a line of business in the Company's insurance agency subsidiary, the Company performed a goodwill impairment test that resulted in an impairment charge of $2.6 million.
 
A summary of core deposit and other intangible assets follows as of December 31, 2016 and 2015:

 
 
December 31,
 
(In thousands)
 
2016
  
2015
 
Core deposit intangibles:
      
Gross carrying amount
 
$
8,975
  
$
19,401
 
Less: accumulated amortization
  
5,626
   
14,800
 
Net carrying amount
  
3,349
   
4,601
 
 
        
Identified intangible assets:
        
Gross carrying amount
  
32,338
   
29,525
 
Less: accumulated amortization
  
19,872
   
16,861
 
Net carrying amount
  
12,466
   
12,664
 
 
        
Total intangibles:
        
Gross carrying amount
  
41,312
   
48,926
 
Less: accumulated amortization
  
25,497
   
31,661
 
Net carrying amount
 
$
15,815
  
$
17,265
 
 
Amortization expense on intangible assets with definite useful lives totaled $3.9 million for 2016, $4.9 million for 2015 and $5.0 million for 2014.  Amortization expense on intangible assets with definite useful lives is expected to total $3.3 million for 2017, $2.6 million for 2018, $1.9 million for 2019, $1.5 million for 2020, $1.1 million for 2021 and $3.9 million thereafter.  Other identified intangible assets include customer lists, non-competes, and trademark intangibles.