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Business Combinations (Details) - USD ($) $ in Thousands	Aug. 01, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Business Combination [Line Items]
Assets		$ 71,142,046	$ 64,879,668	$ 56,259,934
Deposits		57,717,191	52,512,349
Goodwill		$ 797,960	$ 796,942
Macatawa Bank Corporation
Business Combination [Line Items]
Assets	$ 2,900,000
Deposits	2,300,000
Loan	$ 1,300,000
Macatawa Bank Corporation
Business Combination [Line Items]
Business acquisition, number of shares issued (in shares)	4,700,000
Fair value of consideration paid	$ 499,300
Business combination, discount on acquired loans	53,700
Business combination, discount on securities	33,500
Business combination, intangible assets acquired	$ 253,000
Macatawa Bank Corporation | Macatawa Bank Corporation
Business Combination [Line Items]
Number of common stock shares issued for each share of acquiree stock (in shares)	0.137

X

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