Bank Premises and Equipment - Summary of Bank Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Gross	$ 268,738	$ 257,762
Less: accumulated depreciation and amortization	(115,765)	(107,998)
Total Bank Premises and Equipment	152,973	149,764
Land [Member]
Property Plant And Equipment [Line Items]
Land	38,703	38,380
Buildings [Member]
Property Plant And Equipment [Line Items]
Buildings	$ 164,371	156,350
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	$ 62,715	60,083
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	$ 2,949	$ 2,949
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