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

12 Months Ended

Dec. 31, 2019

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, 2019, 2018, and 2017:

	2019								2018								2017
	Goodwill		Core Deposit Intangible			Customer Relationship Intangible			Goodwill		Core Deposit Intangible			Customer Relationship Intangible			Goodwill		Core Deposit Intangible			Customer Relationship Intangible
Beginning balance	$	128,177	$	30,360		$	3,059		$	54,562	$	16,720		$	—		$	51,975	$	19,776		$	—
Additions		20,176		6,220			—			73,615		19,060			3,216			2,587		—			—
Amortization or accretion		—		(7,469	)		(268	)		—		(5,420	)		(157	)		—		(3,056	)		—
Ending balance	$	148,353	$	29,111		$	2,791		$	128,177	$	30,360		$	3,059		$	54,562	$	16,720		$	—
Accumulated amortization or accretion	N/A		$	26,355		$	425		N/A		$	18,886		$	157		N/A		$	13,466		N/A
Weighted average remaining amortization or accretion period	N/A		6.5 Years			10.4 Years			N/A		6.8 Years			11.4 Years			N/A		5.6 Years			N/A

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, 2019:

	Estimated Amortization
2020	$	7,577
2021		7,012
2022		6,440
2023		4,336
2024		2,286
Thereafter		4,251
Total	$	31,902