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Allowance for Credit Losses - Allowance for Credit Loss Activity (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Balance at beginning of period | $ 98,576 | $ 117,612
Provision for credit losses on loans | (698) | 3,301
Charge-offs | (982) | (6,532)
Recoveries | 3,019 | 720
Net Recoveries/(Charge-offs) | 2,037 | (5,812)
Balance at End of Period | 99,915 | 115,101
Commercial | Commercial real estate |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Balance at beginning of period | 50,700 | 65,656
Provision for credit losses on loans | (1,996) | 1,996
Charge-offs | 0 | (810)
Recoveries | 199 | 0
Net Recoveries/(Charge-offs) | 199 | (810)
Balance at End of Period | 48,903 | 66,842
Commercial | Commercial and industrial |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Balance at beginning of period | 19,727 | 16,100
Provision for credit losses on loans | (206) | 2,728
Charge-offs | 0 | (4,302)
Recoveries | 2,716 | 137
Net Recoveries/(Charge-offs) | 2,716 | (4,165)
Balance at End of Period | 22,237 | 14,663
Commercial | Commercial construction |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Balance at beginning of period | 5,355 | 7,239
Provision for credit losses on loans | (27) | (911)
Charge-offs | 0 | 0
Recoveries | 1 | 1
Net Recoveries/(Charge-offs) | 1 | 1
Balance at End of Period | 5,329 | 6,329
Commercial | Business banking |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Balance at beginning of period | 11,338 | 15,917
Provision for credit losses on loans | 765 | 514
Charge-offs | (606) | (917)
Recoveries | 0 | 166
Net Recoveries/(Charge-offs) | (606) | (751)
Balance at End of Period | 11,497 | 15,680
Consumer | Consumer real estate |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Balance at beginning of period | 8,733 | 10,014
Provision for credit losses on loans | 426 | (844)
Charge-offs | (78) | (271)
Recoveries | 37 | 82
Net Recoveries/(Charge-offs) | (41) | (189)
Balance at End of Period | 9,118 | 8,981
Consumer | Other consumer |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Balance at beginning of period | 2,723 | 2,686
Provision for credit losses on loans | 340 | (182)
Charge-offs | (298) | (232)
Recoveries | 66 | 334
Net Recoveries/(Charge-offs) | (232) | 102
Balance at End of Period | $ 2,831 | $ 2,606

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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- Definition Amount, after recovery, of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (4) + Details
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- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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