Goodwill and Other Acquisition-Related Intangible Assets - Schedule of Amortization of Finite-Lived Acquisition-Related Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024
Intangibles with finite lives
Accumulated amortization	$ (90,003)	$ (78,805)	$ (68,990)
Intangibles with indefinite lives
Gross carrying amount	200,498	200,495	89,597
Total other acquisition-related intangible assets, net	110,495	121,690	20,607
Community banking
Intangibles with indefinite lives
Total other acquisition-related intangible assets, net	104,605	115,122	13,340
Community banking \| Trademark
Intangibles with indefinite lives
Carrying amount	13,800	13,800	5,800
Community banking \| Core deposit intangibles
Intangibles with finite lives
Gross carrying amount	158,106	158,106	55,206
Accumulated amortization	(67,301)	(56,784)	(47,666)
Net carrying amount	90,805	101,322	7,540
Specialty finance \| Customer list intangibles
Intangibles with finite lives
Gross carrying amount	1,962	1,959	1,961
Accumulated amortization	(1,915)	(1,881)	(1,861)
Net carrying amount	47	78	100
Wealth management \| Customer list and other intangibles
Intangibles with finite lives
Gross carrying amount	26,630	26,630	26,630
Accumulated amortization	(20,787)	(20,140)	(19,463)
Net carrying amount	$ 5,843	$ 6,490	$ 7,167

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

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