Loans and Allowance for Credit Losses for Loans - Financing Receivable, Modified (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Modified [Line Items]
Total	$ 156,484	$ 57,022	$ 253,784	$ 140,503
% of Total Loan Class	0.32%	0.10%	0.51%	0.28%
Term extension
Financing Receivable, Modified [Line Items]
Total	$ 44,356	$ 56,046	$ 125,302	$ 133,563
Term extension and interest rate reduction
Financing Receivable, Modified [Line Items]
Total	0	56	16,354	6,020
Interest rate reduction
Financing Receivable, Modified [Line Items]
Total	4,156	920	4,156	920
Other than Insignificant Payment Delay
Financing Receivable, Modified [Line Items]
Total	107,972	0	107,972	0
Commercial and industrial
Financing Receivable, Modified [Line Items]
Total	$ 8,480	$ 18,646	$ 88,484	$ 59,523
% of Total Loan Class	0.09%	0.20%	0.90%	0.65%
Commercial and industrial | Term extension
Financing Receivable, Modified [Line Items]
Total	$ 7,556	$ 17,670	$ 87,427	$ 56,322
Commercial and industrial | Term extension and interest rate reduction
Financing Receivable, Modified [Line Items]
Total	0	56	133	2,281
Commercial and industrial | Interest rate reduction
Financing Receivable, Modified [Line Items]
Total	924	920	924	920
Commercial and industrial | Other than Insignificant Payment Delay
Financing Receivable, Modified [Line Items]
Total	0	0	0	0
Commercial Real Estate | Commercial real estate
Financing Receivable, Modified [Line Items]
Total	$ 148,004	$ 38,345	$ 164,431	$ 80,133
% of Total Loan Class	0.55%	0.14%	0.61%	0.28%
Commercial Real Estate | Term extension | Commercial real estate
Financing Receivable, Modified [Line Items]
Total	$ 36,800	$ 38,345	$ 37,006	$ 76,394
Commercial Real Estate | Term extension and interest rate reduction | Commercial real estate
Financing Receivable, Modified [Line Items]
Total	0	0	16,221	3,739
Commercial Real Estate | Interest rate reduction | Commercial real estate
Financing Receivable, Modified [Line Items]
Total	3,232	0	3,232	0
Commercial Real Estate | Other than Insignificant Payment Delay | Commercial real estate
Financing Receivable, Modified [Line Items]
Total	$ 107,972	0	107,972	0
Residential mortgage
Financing Receivable, Modified [Line Items]
Total			$ 869	$ 768
% of Total Loan Class			0.02%	0.01%
Residential mortgage | Term extension
Financing Receivable, Modified [Line Items]
Total			$ 869	$ 768
Residential mortgage | Term extension and interest rate reduction
Financing Receivable, Modified [Line Items]
Total			0	0
Residential mortgage | Interest rate reduction
Financing Receivable, Modified [Line Items]
Total			0	0
Residential mortgage | Other than Insignificant Payment Delay
Financing Receivable, Modified [Line Items]
Total			$ 0	0
Home equity
Financing Receivable, Modified [Line Items]
Total		$ 31		$ 31
% of Total Loan Class		0.01%		0.01%
Home equity | Term extension
Financing Receivable, Modified [Line Items]
Total		$ 31		$ 31
Home equity | Term extension and interest rate reduction
Financing Receivable, Modified [Line Items]
Total		0		0
Home equity | Interest rate reduction
Financing Receivable, Modified [Line Items]
Total		0		0
Home equity | Other than Insignificant Payment Delay
Financing Receivable, Modified [Line Items]
Total		$ 0		0
Consumer loans
Financing Receivable, Modified [Line Items]
Total				$ 48
% of Total Loan Class				0.00%
Consumer loans | Term extension
Financing Receivable, Modified [Line Items]
Total				$ 48
Consumer loans | Term extension and interest rate reduction
Financing Receivable, Modified [Line Items]
Total				0
Consumer loans | Interest rate reduction
Financing Receivable, Modified [Line Items]
Total				0
Consumer loans | Other than Insignificant Payment Delay
Financing Receivable, Modified [Line Items]
Total				$ 0