Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Goodwill Intangible

The following table summarizes the Company’s goodwill intangible as of the dates indicated:

(in thousands)	December 31, 2018		Additions		Reductions		December 31, 2017
Goodwill	$	220,972	$	156,661	$	—	$	64,311

Summary of Core Deposit Intangibles

The following table summarizes the Company’s core deposit intangibles (“CDI”) as of the dates indicated:

(in thousands)	December 31, 2018			Additions		Reductions/ Amortization			December 31, 2017
Core deposit intangibles	$	37,163		$	27,605	$	—		$	9,558
Accumulated amortization		(7,883	)		—		(3,499	)		(4,384	)
Core deposit intangibles, net	$	29,280			27,605	$	(3,499	)	$	5,174

Remaining Estimated Core Deposit Intangible Amortization

The following table summarizes the Company’s estimated core deposit intangible amortization (dollars in thousands):

Years Ended	Estimated Core Deposit Intangible Amortization
2019	$	5,723
2020		5,723
2021		5,465
2022		4,776
2023		4,269
Thereafter		3,324