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GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS
3 Months Ended
Mar. 31, 2018
GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS [Abstract]  
GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS
NOTE F:
GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS

The gross carrying amount and accumulated amortization for each type of identifiable intangible asset are as follows:

  
March 31, 2018
  
December 31, 2017
 
(000's omitted)
 
Gross
Carrying
Amount
  
Accumulated
Amortization
  
Net
Carrying
Amount
  
Gross
Carrying
Amount
  
Accumulated
Amortization
  
Net
Carrying
Amount
 
Amortizing intangible assets:
                  
Core deposit intangibles
 
$
62,902
  
(39,621
)
 
$
23,281
  
$
62,902
  
(37,877
)
 
$
25,025
 
Other intangibles
  
87,372
  
(23,694
)
  
63,678
   
86,535
   
(20,902
)
  
65,633
 
Total amortizing intangibles
 
$
150,274
  
(63,315
)
 
$
86,959
  
$
149,437
  
(58,779
)
 
$
90,658
 

The estimated aggregate amortization expense for each of the five succeeding fiscal years ended December 31 is as follows:

(000's omitted)
 
Apr - Dec 2018
 
$
13,318
 
2019
  
15,247
 
2020
  
12,680
 
2021
  
10,817
 
2022
  
9,288
 
Thereafter
  
25,609
 
Total
 
$
86,959
 

Shown below are the components of the Company’s goodwill at December 31, 2017 and March 31, 2018:

(000’s omitted)
 
December 31, 2017
  
Activity
  
March 31, 2018
 
Goodwill
 
$
739,254
  
(805
)
 
$
738,449
 
Accumulated impairment
  
(4,824
)
  
0
   
(4,824
)
Goodwill, net
 
$
734,430
  
(805
)
 
$
733,625