Loans and Allowance for Credit Losses - Schedule of Non-Accrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	$ 116,437	$ 35,995
Non-Accrual Loans Without ACL	8,066	16,562
Total Nonaccrual Loans	124,503	52,557
Commercial Portfolio Segment \| Commercial and industrial
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	11	4
Non-Accrual Loans Without ACL	6,625	464
Total Nonaccrual Loans	6,636	468
Commercial Portfolio Segment \| Commercial real estate
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	91,958	13,969
Non-Accrual Loans Without ACL	1,438	16,087
Total Nonaccrual Loans	93,396	30,056
Commercial Portfolio Segment \| Commercial construction
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	0	0
Non-Accrual Loans Without ACL	0	0
Total Nonaccrual Loans	0	0
Commercial Portfolio Segment \| Business banking
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	5,064	4,572
Non-Accrual Loans Without ACL	3	11
Total Nonaccrual Loans	5,067	4,583
Residential Real Estate \| Residential real estate
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	10,450	8,725
Non-Accrual Loans Without ACL	0	0
Total Nonaccrual Loans	10,450	8,725
Consumer Portfolio Segment \| Consumer home equity
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	8,739	8,532
Non-Accrual Loans Without ACL	0	0
Total Nonaccrual Loans	8,739	8,532
Consumer Portfolio Segment \| Other Consumer
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	215	193
Non-Accrual Loans Without ACL	0	0
Total Nonaccrual Loans	$ 215	$ 193

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Amortized cost of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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