Core Deposit Intangibles (Tables)

3 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Carrying amount, accumulated amortization and amortization expense of core deposit intangible assets

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)	March 31, 2019		December 31, 2018
Gross original amount	$	56,456	$	56,456
Accumulated amortization	29,261		27,900
Net carrying amount	$	27,195	$	28,556

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The estimated future amortization expense on core deposit intangible assets for periods ending after March 31, 2019 is as follows:

(Dollars in thousands)	Estimated amortization expense
2019	4,081
2020	4,851
2021	4,471
2022	4,218
2023	3,591
2024 and thereafter	5,983