Goodwill, Core Deposit Intangible and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Changes in Goodwill and Core Deposit Intangible Assets

The following table summarizes the changes in the Company’s goodwill and core deposit intangible assets for the years ended December 31, 2017, 2016 and 2015:

	2017					2016					2015
	Goodwill		Core Deposit Intangible			Goodwill		Core Deposit Intangible			Goodwill		Core Deposit Intangible
Beginning balance	$	51,975	$	19,776		$	25,688	$	22,275		$	25,613	$	25,245
Additions		—		—			26,287		486			75		—
Amortization or accretion		—		(3,056	)		—		(2,985	)		—		(2,970	)
Ending balance	$	51,975	$	16,720		$	51,975	$	19,776		$	25,688	$	22,275
Accumulated amortization or accretion	N/A		$	13,466		N/A		$	10,410		N/A		$	7,425
Weighted average remaining amortization or accretion period	N/A		5.6 Years			N/A		6.6 Years			N/A		7.5 Years

Estimated Amortization Expense for Core Deposit Intangible and Other Intangible Assets Recognized

The following table presents the estimated amortization expense for core deposit intangible and other intangible assets recognized at December 31, 2017:

	Estimated Amortization
2018	$	3,061
2019		3,050
2020		3,026
2021		3,017
2022		3,010
Thereafter		1,592
Total	$	16,756