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Loans and Leases - Aging Analysis of Accruing and Nonaccrual Modified Loans to Borrowers Experiencing Financial Difficult (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net of deferred income	$ 6,579,086	$ 6,567,214	$ 6,239,804
Accrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net of deferred income	8,009
Nonaccrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net of deferred income	5,739
Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	6,541,506	6,520,942
Current \| Accrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	8,009
Current \| Nonaccrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	0
Financial Asset, 30 to 89 Days Past Due \| Accrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	0
Financial Asset, 30 to 89 Days Past Due \| Nonaccrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	0
90 Days or more Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	268	534
90 Days or more Past Due \| Accrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	0
90 Days or more Past Due \| Nonaccrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	5,739
Real estate-commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net of deferred income	3,283,729	3,302,798	3,128,210
Real estate-commercial \| Accrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net of deferred income	6,178
Real estate-commercial \| Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	3,273,830	3,294,254
Real estate-commercial \| Current \| Accrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	6,178
Real estate-commercial \| Financial Asset, 30 to 89 Days Past Due \| Accrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	0
Real estate-commercial \| 90 Days or more Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	0	0
Real estate-commercial \| 90 Days or more Past Due \| Accrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	0
Real estate-construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net of deferred income	379,995	394,462	$ 376,569
Real estate-construction \| Accrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net of deferred income	1,831
Real estate-construction \| Nonaccrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net of deferred income	5,739
Real estate-construction \| Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	373,448	378,328
Real estate-construction \| Current \| Accrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	1,831
Real estate-construction \| Current \| Nonaccrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	0
Real estate-construction \| Financial Asset, 30 to 89 Days Past Due \| Accrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	0
Real estate-construction \| Financial Asset, 30 to 89 Days Past Due \| Nonaccrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	0
Real estate-construction \| 90 Days or more Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	0	$ 0
Real estate-construction \| 90 Days or more Past Due \| Accrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	0
Real estate-construction \| 90 Days or more Past Due \| Nonaccrual Modified Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivables, gross	$ 5,739