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Other Intangible Assets
9 Months Ended
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Other Intangible Assets
Other Intangible Assets
The following table shows the net carrying value of the Corporation’s other intangible assets, included in other tangible assets on the Consolidated Statement of Financial Position:
(Dollars in thousands)
 
September 30,
2017
 
December 31,
2016
Core deposit intangible assets
 
$
35,747

 
$
40,211

Non-compete intangible assets
 
50

 

Total other intangible assets
 
$
35,797

 
$
40,211


The following table sets forth the carrying amount and accumulated amortization of core deposit intangible assets that are amortizable and arose from business combinations or other acquisitions:
(Dollars in thousands)
 
September 30,
2017
 
December 31,
2016
Gross original amount
 
$
59,143

 
$
59,143

Accumulated amortization
 
23,396

 
18,932

Net carrying amount
 
$
35,747


$
40,211


Amortization expense recognized on core deposit intangible assets was $1.5 million and $1.2 million for the three months ended September 30, 2017 and 2016, respectively, and $4.5 million and $3.4 million for the nine months ended September 30, 2017 and 2016, respectively.
The estimated future amortization expense on core deposit intangible assets for periods ending after September 30, 2017 is as follows: 2017$1.5 million; 2018$5.7 million; 2019$5.4 million; 2020$4.9 million; 2021$4.5 million; 2022 and thereafter — $13.8 million.