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Allowance for Credit Losses (ACL) - Aggregated analysis of the changes in allowance for loan losses Summary (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Allowance for credit losses |  |  |  |
Balance at beginning of period | $ 457,309 | $ 56,927 |  |
Loans charged-off | (16,899) | (14,602) |  |
Recoveries of loans previously charged off | 13,800 | 11,777 |  |
Net (charge-offs) recoveries | (3,099) | (2,825) |  |
Provision for credit losses | (152,403) | 89,923 |  |
Balance at end of period | 301,807 | 457,309 | $ 56,927 |
As previously recorded by acquiree |  |  |  |
Allowance for credit losses |  |  |  |
Balance at beginning of period |  | 61,991 | 55,798 |
Loans charged-off |  |  | (9,775) |
Recoveries of loans previously charged off |  |  | 3,914 |
Net (charge-offs) recoveries |  |  | (5,861) |
Provision for credit losses |  |  | 12,777 |
Reduction due to loan removals |  |  | (723) |
Balance at end of period |  |  | 61,991 | $ 55,798
Non-acquired loans |  |  |  |
Allowance for credit losses |  |  |  |
Balance at beginning of period |  | 56,927 | 51,194 |
Loans charged-off |  |  | (6,917) |
Recoveries of loans previously charged off |  |  | 3,367 |
Provision for credit losses |  |  | 9,283 |
Balance at end of period |  |  | 56,927 | 51,194
Non-acquired loans | As previously recorded by acquiree |  |  |  |
Allowance for credit losses |  |  |  |
Balance at beginning of period |  | 56,927 | 51,194 |
Loans charged-off |  |  |  | (6,917)
Recoveries of loans previously charged off |  |  |  | 3,367
Net (charge-offs) recoveries |  |  |  | (3,550)
Provision for credit losses |  |  |  | 9,283
Balance at end of period |  |  | 56,927 | 51,194
Acquired non-credit impaired loans |  |  |  |
Allowance for credit losses |  |  |  |
Loans charged-off |  |  | (2,858) |
Recoveries of loans previously charged off |  |  | 547 |
Provision for credit losses |  |  | 2,311 |
Acquired non-credit impaired loans | As previously recorded by acquiree |  |  |  |
Allowance for credit losses |  |  |  |
Loans charged-off |  |  | (2,858) |
Recoveries of loans previously charged off |  |  | 547 |
Net (charge-offs) recoveries |  |  | (2,311) |
Provision for credit losses |  |  | 2,311 |
Acquired credit impaired loans |  |  |  |
Allowance for credit losses |  |  |  |
Balance at beginning of period | $ 5,064 |  | 4,604 |
Provision for credit losses |  | 1,183 |  |
Balance at end of period |  | 5,064 |  | 4,604
Acquired credit impaired loans | As previously recorded by acquiree |  |  |  |
Allowance for credit losses |  |  |  |
Balance at beginning of period |  | $ 5,064 | 4,604 |
Provision for credit losses |  |  | 1,183 |
Reduction due to loan removals |  |  | (723) |
Balance at end of period |  |  | $ 5,064 | $ 4,604

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- Definition Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities. This amount is net of reduction in bad debt expense attributable to collections of loans and lease receivables which had previously been fully or partially charged off as bad debts. + References No definition available. + 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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- Definition Amount of increase (decrease) in allowance for credit loss on financing receivable. + 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) -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 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + 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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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 3: 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 + Details
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- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + 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)(2) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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