Loans and Allowance for Credit Losses - Schedule of Non-Accrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	$ 46,985	$ 26,244
Non-Accrual Loans Without ACL	480	12,360
Total Nonaccrual Loans	47,465	38,604
Commercial Portfolio Segment \| Commercial and industrial
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	4	3,270
Non-Accrual Loans Without ACL	466	10,707
Total Nonaccrual Loans	470	13,977
Commercial Portfolio Segment \| Commercial real estate
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	25,797	0
Non-Accrual Loans Without ACL	0	0
Total Nonaccrual Loans	25,797	0
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	5,422	5,844
Non-Accrual Loans Without ACL	14	1,653
Total Nonaccrual Loans	5,436	7,497
Residential Real Estate \| Residential real estate
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	8,075	9,750
Non-Accrual Loans Without ACL	0	0
Total Nonaccrual Loans	8,075	9,750
Consumer Portfolio Segment \| Consumer home equity
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	7,506	7,054
Non-Accrual Loans Without ACL	0	0
Total Nonaccrual Loans	7,506	7,054
Consumer Portfolio Segment \| Other Consumer
Financing Receivable, Past Due [Line Items]
Non-Accrual Loans With ACL	181	326
Non-Accrual Loans Without ACL	0	0
Total Nonaccrual Loans	$ 181	$ 326

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

+ References

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-Topic 326
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Amortized cost of financing receivable on nonaccrual status. 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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