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Allowance for Credit Losses - Allowance for Credit Loss Activity (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 | Dec. 31, 2021 | Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  | $ 117,612 | $ 62,224
Provision for credit losses on loans |  | 15,494 | 131,421
Charge-offs |  | (37,524) | (106,365)
Recoveries |  | 2,994 | 2,986
Net (Charge-offs)/Recoveries |  | (34,530) | (103,379)
Balance at End of Period |  | 98,576 | 117,612
Customer fraud, check kiting |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Charge-offs | $ (58,700) |  |
Commercial | Commercial real estate |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  | 65,656 | 30,577
Provision for credit losses on loans |  | (2,569) | 56,489
Charge-offs |  | (13,444) | (26,460)
Recoveries |  | 1,057 | 240
Net (Charge-offs)/Recoveries |  | (12,387) | (26,220)
Balance at End of Period |  | 50,700 | 65,656
Commercial | Commercial and industrial |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  | 16,100 | 15,681
Provision for credit losses on loans |  | 23,746 | 65,288
Charge-offs |  | (20,923) | (74,282)
Recoveries |  | 804 | 1,560
Net (Charge-offs)/Recoveries |  | (20,119) | (72,722)
Balance at End of Period |  | 19,727 | 16,100
Commercial | Commercial construction |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  | 7,239 | 7,900
Provision for credit losses on loans |  | (1,842) | 2,986
Charge-offs |  | (56) | (454)
Recoveries |  | 14 | 183
Net (Charge-offs)/Recoveries |  | (42) | (271)
Balance at End of Period |  | 5,355 | 7,239
Commercial | Business banking |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  | 15,917 | 0
Provision for credit losses on loans |  | (3,159) | 5,303
Charge-offs |  | (1,580) | (2,612)
Recoveries |  | 160 | 328
Net (Charge-offs)/Recoveries |  | (1,420) | (2,284)
Balance at End of Period |  | 11,338 | 15,917
Consumer | Consumer real estate |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  | 10,014 | 6,337
Provision for credit losses on loans |  | (1,020) | (368)
Charge-offs |  | (569) | (667)
Recoveries |  | 308 | 187
Net (Charge-offs)/Recoveries |  | (261) | (480)
Balance at End of Period |  | 8,733 | 10,014
Consumer | Other consumer |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  | 2,686 | 1,729
Provision for credit losses on loans |  | 338 | 1,723
Charge-offs |  | (952) | (1,890)
Recoveries |  | 651 | 488
Net (Charge-offs)/Recoveries |  | (301) | (1,402)
Balance at End of Period |  | $ 2,723 | 2,686
Cumulative Effect, Period of Adoption, Adjustment |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  |  | 27,346
Cumulative Effect, Period of Adoption, Adjustment | Commercial | Commercial real estate |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  |  | 4,810
Cumulative Effect, Period of Adoption, Adjustment | Commercial | Commercial and industrial |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  |  | 7,853
Cumulative Effect, Period of Adoption, Adjustment | Commercial | Commercial construction |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  |  | (3,376)
Cumulative Effect, Period of Adoption, Adjustment | Commercial | Business banking |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  |  | 12,898
Cumulative Effect, Period of Adoption, Adjustment | Consumer | Consumer real estate |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  |  | 4,525
Cumulative Effect, Period of Adoption, Adjustment | Consumer | Other consumer |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at beginning of period |  |  | $ 636

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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 allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (c) Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) + Details
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