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Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Carrying Value of Intangible Assets Subject to Amortization

		December 31, 2020
		Purchase					Accumulated					Carrying
(in thousands)		Value					Amortization					Value
Core deposit intangibles		$		235,845			$		173,830			$		62,015
Credit card and trust relationships				49,962					25,085					24,877
Merchant processing relationships				10,000					10,000					—
		$		295,807			$		208,915			$		86,892

		December 31, 2019
		Purchase					Accumulated					Carrying
(in thousands)		Value					Amortization					Value
Core deposit intangibles		$		247,455			$		168,577			$		78,878
Credit card and trust relationships				49,962					22,448					27,514
Merchant processing relationships				10,000					9,585					415
		$		307,417			$		200,610			$		106,807

Aggregate Amortization Expense

		Years Ended December 31,
(in thousands)		2020					2019					2018
Core deposit intangibles		$		16,864			$		17,132			$		18,566
Credit card and trust relationships				2,637					2,883					2,682
Merchant processing relationships				415					829					802
		$		19,916			$		20,844			$		22,050

Estimated Amortization Expense of Other Intangible Assets

(in thousands)
2021		$		16,665
2022				14,033
2023				11,557
2024				9,413
2024				7,985
Thereafter				27,239
		$		86,892

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- Definition

Tabular disclosure of amortization expense of assets, excluding financial assets, that lack physical substance, having a limited useful life.

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- Definition

Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
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