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Goodwill and Intangible Assets
9 Months Ended
Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets GOODWILL AND INTANGIBLE ASSETS

Goodwill increased $93.9 million to $211.3 million at September 30, 2019 from $117.3 million at December 31, 2018 due to the acquisition of Trinity.

The table below presents a summary of intangible assets:
 
Nine months ended
(in thousands)
September 30, 2019
Gross core deposit intangible, beginning of period
$
20,574

Additions from acquisition
23,066

Gross core deposit intangible, end of period
43,640

Accumulated amortization
(16,014
)
Core deposit intangible, net, end of period
$
27,626



Amortization expense on the core deposit intangible was $1.6 million and $0.6 million for the quarters ended September 30, 2019 and 2018, and $4.0 million and $1.9 million for the nine months ended September 30, 2019 and 2018, respectively. The core deposit intangibles are being amortized over a 10 year period.

The following table reflects the expected amortization schedule for the core deposit intangible at September 30, 2019.
Year
Core Deposit Intangible
(in thousands)
2019
$
1,550

2020
5,608

2021
4,814

2022
4,085

2023
3,456

After 2023
8,113

 
$
27,626