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Allowance for Credit Losses - Rollforward of the Reserve for Unfunded Commitments (Details) - Unfunded Loan Commitment [Member] - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | $ 34,813 | $ 36,199 | $ 35,605 | $ 33,835
Provision | (1,400) |  | (2,192) | 2,364
Reserve for unfunded commitments, ending balance | 33,413 | 36,199 | 33,413 | 36,199
Commercial and Industrial |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | 8,792 | 7,153 | 9,116 | 7,811
Provision | (845) | (799) | (1,169) | (1,457)
Reserve for unfunded commitments, ending balance | 7,947 | 6,354 | 7,947 | 6,354
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | 1,873 | 1,692 | 1,787 | 2,004
Provision | (438) | 299 | (352) | (13)
Reserve for unfunded commitments, ending balance | 1,435 | 1,991 | 1,435 | 1,991
Construction |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | 6,897 | 8,952 | 8,048 | 7,470
Provision | 225 | 837 | (926) | 2,319
Reserve for unfunded commitments, ending balance | 7,122 | 9,789 | 7,122 | 9,789
Real Estate Loan [Member] |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance |  | 17 | 24 | 30
Provision |  | 2 | (16) | (11)
Reserve for unfunded commitments, ending balance | 8 | 19 | 8 | 19
Residential Lending: Home Equity Line |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | 17,187 | 18,336 | 16,589 | 16,483
Provision | (308) | (321) | 290 | 1,532
Reserve for unfunded commitments, ending balance | 16,879 | 18,015 | 16,879 | 18,015
Residential Portfolio Segment [Member] |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | 14 |  |  |
Provision | (6) |  |  |
Reserve for unfunded commitments, ending balance | 8 |  | 8 |
Consumer |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | 50 | 49 | 41 | 37
Provision | (28) | (18) | (19) | (6)
Reserve for unfunded commitments, ending balance | $ 22 | $ 31 | $ 22 | $ 31

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- Definition Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482454/460-10-45-1 + Details
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