Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill

The following is a summary of the gross carrying amount and accumulated amortization of amortizable intangible assets as of December 31, 2020 and December 31, 2019 and the carrying amount of unamortizable intangible assets as of those same dates.

	December 31, 2020			December 31, 2019
($ in thousands)	Gross Carrying Amount		Accumulated Amortization	Gross Carrying Amount	Accumulated Amortization
Amortizable intangible assets:
Customer lists	$	7,613	2,814	6,013	2,185
Core deposit intangibles	28,440		23,832	28,440	20,610
SBA servicing asset	9,976		4,188	7,776	2,393
Other	1,403		1,232	1,303	1,127
Total	$	47,432	32,066	43,532	26,315
Unamortizable intangible assets:
Goodwill	$	239,272		234,368

Schedule of the Estimated Amortization Expense

The following table presents the estimated amortization expense schedule related to acquisition-related amortizable intangible assets for each of the five calendar years ending December 31, 2025 and the estimated amount amortizable thereafter. These amounts will be recorded as "Intangibles amortization expense" within the noninterest expense section of the Consolidated Statements of Income. These estimates are subject to change in future periods to the extent management determines it is necessary to make adjustments to the carrying value or estimated useful lives of amortizable intangible assets.

($ in thousands)	Estimated Amortization Expense
2021	$	3,272
2022	2,367
2023	1,386
2024	741
2025	562
Thereafter	1,250
Total	$	9,578