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GOODWILL AND OTHER INTANGIBLES (Tables)
3 Months Ended
Mar. 31, 2016
Gross Amount and Accumulated Amortization of Other Intangible Assets
The following table shows the gross amount and accumulated amortization of the Corporation’s intangible assets recognized as part of Other Assets in the consolidated statement of financial condition:
      
 As of As of
 March 31,  December 31,
 2016 2015
(Dollars in thousands)     
Core deposit intangible:     
Gross amount, beginning of period$ 51,664 $ 45,844
Addition as a result of acquisition  -   5,820
Accumulated amortization  (42,990)   (42,498)
Net carrying amount$ 8,674 $ 9,166
      
Remaining amortization period 8.8 years  9.0 years
      
Purchased credit card relationship intangible:     
Gross amount$ 24,465 $ 24,465
Accumulated amortization  (11,843)   (11,146)
Net carrying amount$ 12,622 $ 13,319
      
Remaining amortization period 5.6 years  5.8 years
      
Insurance customer relationship intangible:     
Gross amount$ 1,067 $ -
Accumulated amortization  (25)   -
Net carrying amount$ 1,042 $ -
      
Remaining amortization period 6.8 years    -

 The estimated aggregate amortization expense related to these intangible assets for future periods is as follows:
     
   Amount 
   (In thousands) 
2016$ 3,681 
2017  4,495 
2018  3,519 
2019  3,067 
2020  2,851 
2021 and after  4,725