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Allowance for Credit Losses - Schedule of Detail in Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 47,505 | $ 52,082 | $ 51,669 | $ 39,892 |
Charge-offs | (210) | (175) | (543) | (1,748) |
Recoveries | 141 | 187 | 1,538 | 538 |
(Credit) provision for credit loss expense | (1,177) | 199 | (6,405) | 16,145 |
Ending balance | 46,259 | 52,293 | 46,259 | 52,293 |
Allowance for credit losses for off-balance | 2,200 |  | 2,200 |  | $ 1,900
Provision off-balance sheet, loss expense (reversal) | (55) | (417) | (272) | 1,300 |
Commercial and industrial |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 7,113 | 11,113 | 9,239 | 10,541 |
Charge-offs | (157) | 0 | (274) | (1) |
Recoveries | 16 | 89 | 116 | 125 |
(Credit) provision for credit loss expense | (774) | (3,918) | (2,883) | (1,373) |
Ending balance | 6,198 | 7,284 | 6,198 | 7,284 |
Commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 29,201 | 24,286 | 30,546 | 21,608 |
Charge-offs | 0 | 0 | 0 | (1,305) |
Recoveries | 2 | 9 | 1,040 | 40 |
(Credit) provision for credit loss expense | (119) | 4,264 | (2,502) | 14,133 |
Ending balance | 29,084 | 28,559 | 29,084 | 28,559 |
Residential real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 9,534 | 15,012 | 10,257 | 6,381 |
Charge-offs | 0 | (30) | (51) | (33) |
Recoveries | 65 | 16 | 229 | 178 |
(Credit) provision for credit loss expense | (184) | (65) | (1,020) | 3,948 |
Ending balance | 9,415 | 14,933 | 9,415 | 14,933 |
Consumer and other |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 1,590 | 1,596 | 1,562 | 1,362 |
Charge-offs | (53) | (145) | (218) | (409) |
Recoveries | 58 | 73 | 153 | 195 |
(Credit) provision for credit loss expense | (99) | (75) | (1) | (549) |
Ending balance | 1,496 | 1,449 | 1,496 | 1,449 |
Finance Leases |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 67 | 75 | 65 | 0 |
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
(Credit) provision for credit loss expense | (1) | (7) | 1 | (14) |
Ending balance | $ 66 | $ 68 | 66 | 68 |
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance |  |  | $ 2,500 | (2,534) |
Cumulative Effect, Period of Adoption, Adjustment | Commercial and industrial |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance |  |  |  | (2,008) |
Cumulative Effect, Period of Adoption, Adjustment | Commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance |  |  |  | (5,917) |
Cumulative Effect, Period of Adoption, Adjustment | Residential real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance |  |  |  | 4,459 |
Cumulative Effect, Period of Adoption, Adjustment | Consumer and other |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance |  |  |  | 850 |
Cumulative Effect, Period of Adoption, Adjustment | Finance Leases |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance |  |  |  | $ 82 |

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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 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 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 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 -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121611286&loc=d3e11927-110247 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82919202-210446 + Details
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- Definition Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. 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 -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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