Goodwill and Other Acquisition-Related Intangible Assets (Summary of Intangible Assets) (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Intangibles with finite lives
Accumulated amortization	$ (56,705)	$ (55,096)	$ (49,369)
Intangibles with indefinite lives
Gross carrying amount	83,404	83,403	83,404
Total net carrying amount	26,699	28,307	34,035
Community banking
Intangibles with indefinite lives
Total net carrying amount	21,763	22,939	26,907
Community banking \| Trademark
Intangibles with indefinite lives
Carrying amount	5,800	5,800	5,800
Core deposit intangibles \| Community banking
Intangibles with finite lives
Gross carrying amount	55,206	55,206	55,206
Accumulated amortization	(39,243)	(38,067)	(34,099)
Net carrying amount	15,963	17,139	21,107
Customer list intangibles \| Specialty finance
Intangibles with finite lives
Gross carrying amount	1,968	1,967	1,968
Accumulated amortization	(1,738)	(1,721)	(1,665)
Net carrying amount	230	246	303
Customer list and other intangibles \| Wealth management
Intangibles with finite lives
Gross carrying amount	20,430	20,430	20,430
Accumulated amortization	(15,724)	(15,308)	(13,605)
Net carrying amount	$ 4,706	$ 5,122	$ 6,825

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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