v3.25.2
Business Combinations (Details)
$ in Thousands
Aug. 01, 2024
USD ($)
branch
shares
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Jun. 30, 2024
USD ($)
Business Combination [Line Items]        
Total assets at period end   $ 68,983,318 $ 64,879,668 $ 59,781,516
Deposits   $ 55,816,811 $ 52,512,349 $ 48,049,026
Macatawa Bank Corporation        
Business Combination [Line Items]        
Total assets at period end $ 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) | shares 4,700,000      
Fair value of consideration paid $ 499,300      
Business combination, number of acquired operating branches | branch 26      
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) | shares 0.137