Bank Premises and Equipment - Summary of Bank Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Gross	$ 282,658	$ 272,511
Less: accumulated depreciation and amortization	(130,754)	(120,723)
Total bank premises and equipment	151,904	151,788
Land [Member]
Property Plant And Equipment [Line Items]
Land	39,866	39,481
Buildings [Member]
Property Plant And Equipment [Line Items]
Buildings	$ 170,746	167,450
Buildings [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Useful Life in years	20 years
Buildings [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Useful Life in years	40 years
Furniture and Equipment [Member]
Property Plant And Equipment [Line Items]
Furniture and equipment	$ 69,136	62,644
Furniture and Equipment [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Useful Life in years	3 years
Furniture and Equipment [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Useful Life in years	10 years
Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Leasehold improvements	$ 2,910	$ 2,936
Leasehold Improvements [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Useful Life in years	5 years
Leasehold Improvements [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Useful Life in years	15 years