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Goodwill and Other Intangible Assets
12 Months Ended
Dec. 31, 2019
Goodwill and Other Intangible Assets [Abstract]  
Goodwill and Other Intangible Assets
7.          Goodwill and Other Intangible Assets


A summary of goodwill is as follows:

(In thousands)
     
January 1, 2019
 
$
274,769
 
Goodwill acquired
   
-
 
December 31, 2019
 
$
274,769
 
         
January 1, 2018
 
$
268,043
 
Goodwill acquired
   
6,726
 
December 31, 2018
 
$
274,769
 

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.

There was no impairment of goodwill recorded during the year ended December 31, 2019 and 2018.

A summary of core deposit and other intangible assets follows:


 
December 31,
 
(In thousands)
 
2019
   
2018
 
Core deposit intangibles:
           
Gross carrying amount
 
$
8,951
   
$
8,975
 
Less: accumulated amortization
   
7,988
     
7,377
 
Net carrying amount
 
$
963
   
$
1,598
 
                 
Identified intangible assets:
               
Gross carrying amount
 
$
34,623
   
$
34,623
 
Less: accumulated amortization
   
23,566
     
20,622
 
Net carrying amount
 
$
11,057
   
$
14,001
 
                 
Total intangibles:
               
Gross carrying amount
 
$
43,574
   
$
43,598
 
Less: accumulated amortization
   
31,554
     
27,999
 
Net carrying amount
 
$
12,020
   
$
15,599
 

Amortization expense on intangible assets with definite useful lives totaled $3.6 million for 2019, $4.0 million for 2018 and $4.0 million for 2017. Amortization expense on intangible assets with definite useful lives is expected to total $3.0 million for 2020, $2.3 million for 2021, $1.8 million for 2022, $1.4 million for 2023, $1.1 million for 2024 and $2.4 million thereafter. Other identified intangible assets include customer lists and non-compete agreements. 

During the years ended December 31, 2019 and 2018, there was no impairment of intangible assets.