Goodwill, Core Deposit Intangible and Other Intangible Assets

12 Months Ended

Dec. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill, Core Deposit Intangible and Other Intangible Assets

Note 10—Goodwill, Core Deposit Intangible and Other Intangible Assets

The Company’s annual goodwill test was performed as of November 30, 2019. The Company determined that no impairment existed as of that date. Refer to Note 1—Business and Summary of Significant Accounting Policies for discussion of goodwill.

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

Note 10—Goodwill, Core Deposit Intangible and Other Intangible Assets (continued)

During 2019, the Company added additional goodwill and core deposit intangible assets in conjunction with the Oak Park River Forest acquisition. During 2018, the Company added additional goodwill, core deposit intangible assets, and customer relationship intangible assets in conjunction with the First Evanston acquisition. Please refer to Note 3—Acquisition of a Business for further details. The increase in goodwill for the year ended December 31, 2017 resulted from the Company’s acquisition of Ridgestone Financial Services, Inc. (“Ridgestone”) during 2016.

Additionally, the Company had other intangible assets of $36,000 as of December 31, 2017, associated with trademark‑related transactions. The other intangible assets were fully amortized in 2018 resulting in no remaining balance as of December 31, 2019 and 2018.

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