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Allowance for Credit Losses - Reserve for Unfunded Commitments (Details) - Reserve for unfunded commitments - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | $ 34,103 | $ 17,251 | $ 30,603 | $ 600
Increase (decrease) in Provision | (4,881) | 5,953 | (1,381) | 6,304
Reserve for unfunded commitments, ending balance | 29,222 | 23,204 | 29,222 | 23,204
Commercial and Industrial |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | 16,129 | 4,791 | 11,719 |
Increase (decrease) in Provision | (3,321) | 3,390 | 1,089 | 2,791
Reserve for unfunded commitments, ending balance | 12,808 | 8,181 | 12,808 | 8,181
Commercial Real Estate |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | 1,112 | 696 | 1,328 |
Increase (decrease) in Provision | (134) | 472 | (350) | 390
Reserve for unfunded commitments, ending balance | 978 | 1,168 | 978 | 1,168
Construction |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | 8,313 | 4,813 | 9,037 |
Increase (decrease) in Provision | (440) | 1,095 | (1,164) | 1,789
Reserve for unfunded commitments, ending balance | 7,873 | 5,908 | 7,873 | 5,908
Residential mortgage |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance |  | 1 | 2 |
Increase (decrease) in Provision |  | 2 | (2) | (4)
Reserve for unfunded commitments, ending balance |  | 3 |  | 3
Home equity |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | 8,500 | 6,927 | 8,452 |
Increase (decrease) in Provision | (979) | 963 | (931) | 1,303
Reserve for unfunded commitments, ending balance | 7,521 | 7,890 | 7,521 | 7,890
Consumer |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance | 49 | 23 | 65 | 600
Increase (decrease) in Provision | (7) | 31 | (23) | 35
Reserve for unfunded commitments, ending balance | $ 42 | $ 54 | $ 42 | 54
ASU No. 2016-13 | Cumulative-effect adjustment of a change in accounting principle, net of tax: ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance |  |  |  | 16,300
ASU No. 2016-13 | Cumulative-effect adjustment of a change in accounting principle, net of tax: ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments | Commercial and Industrial |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance |  |  |  | 5,390
ASU No. 2016-13 | Cumulative-effect adjustment of a change in accounting principle, net of tax: ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments | Commercial Real Estate |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance |  |  |  | 778
ASU No. 2016-13 | Cumulative-effect adjustment of a change in accounting principle, net of tax: ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments | Construction |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance |  |  |  | 4,119
ASU No. 2016-13 | Cumulative-effect adjustment of a change in accounting principle, net of tax: ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments | Residential mortgage |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance |  |  |  | 7
ASU No. 2016-13 | Cumulative-effect adjustment of a change in accounting principle, net of tax: ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments | Home equity |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance |  |  |  | 6,587
ASU No. 2016-13 | Cumulative-effect adjustment of a change in accounting principle, net of tax: ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments | Consumer |  |  |  |
Reserve for unfunded commitments: |  |  |  |
Reserve for unfunded commitments, beginning balance |  |  |  | $ (581)

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