Subsequent Events (Details) $ in Thousands, shares in Millions	Aug. 01, 2024 branch shares	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)
Subsequent Event [Line Items]
Assets		$ 59,781,516	$ 56,259,934	$ 54,286,176
Deposits		48,049,026	$ 45,397,170	$ 44,038,707
Macatawa Bank Corporation
Subsequent Event [Line Items]
Assets		2,700,000
Deposits		2,300,000
Net loans		$ 1,300,000
Subsequent Event | Macatawa Bank Corporation
Subsequent Event [Line Items]
Business acquisition, number of shares issued (in shares) | shares	4.7
Business combination, number of acquired operating branches | branch	26