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Goodwill and Core Deposit Intangibles (Tables)
12 Months Ended
Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]  
Goodwill and Core Deposit Intangibles

Changes in the carrying amount of the Company’s goodwill and core deposit intangibles for fiscal years 2017 and 2016 were as follows:

 

 

 

Goodwill

 

 

Core Deposit Intangibles

 

 

 

(Dollars in thousands)

 

Balance as of December 31, 2015

 

$

1,868,827

 

 

$

49,417

 

Less:

 

 

 

 

 

 

 

 

Amortization

 

 

 

 

 

(9,200

)

Add:

 

 

 

 

 

 

 

 

Acquisition of Tradition Bancshares, Inc.

 

 

32,018

 

 

 

5,567

 

Balance as of December 31, 2016

 

 

1,900,845

 

 

 

45,784

 

Less:

 

 

 

 

 

 

 

 

Amortization

 

 

 

 

 

(6,942

)

Balance as of December 31, 2017

 

$

1,900,845

 

 

$

38,842

 

 

Estimated Aggregate Future Amortization Expense for Core Deposit Intangibles

The estimated aggregate future amortization expense for core deposit intangibles remaining as of December 31, 2017 is as follows (dollars in thousands):

 

2018

 

$

5,959

 

2019

 

 

5,051

 

2020

 

 

4,483

 

2021

 

 

4,022

 

Thereafter

 

 

19,327

 

Total

 

$

38,842