Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 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:

	September 30,						December 31,
(in thousands)	2018		Additions		Reductions		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:

	September 30,					Reductions/			December 31,
(in thousands)	2018			Additions		Amortization			2017
Core deposit intangibles	$	37,163			27,605		—		$	9,558
Accumulated amortization		(6,452	)		—	$	(2,068	)		(4,384	)
Core deposit intangibles, net	$	30,711			27,605	$	(2,068	)	$	5,174

Remaining Estimated Core Deposit Intangible Amortization

The following table summarizes the Company’s remaining estimated core deposit intangible amortization at September 30, 2018 (in thousands):

	Estimated Core Deposit
Years Ended	Intangible Amortization
2018	$	1,431
2019		5,723
2020		5,723
2021		5,465
2022		4,776
Thereafter		7,593