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Loans and Allowance for Credit Losses on Loans - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning balance | $ 19,100 |  | $ 22,874 |
Provision (reversal) - CECL | 1,800 |  | (2,049) |
Initial allowance for PCD loans | 1,505 |  | 1,505 |
Charge-offs | (2) |  | (2) |
Recoveries | 11 |  | 86 |
Ending balance | 22,414 |  | 22,414 |
Beginning balance |  | $ 20,868 |  | $ 16,677
Provision - incurred loss |  | 1,250 | (2,049) | 5,450
Charge-offs |  | (10) |  | (30)
Recoveries |  | 5 |  | 16
Ending balance |  | 22,113 |  | 22,113
Commercial loans | Commercial and industrial |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning balance | 1,590 |  | 2,530 |
Provision (reversal) - CECL | 126 |  | (821) |
Initial allowance for PCD loans | 405 |  | 405 |
Charge-offs | 0 |  | 0 |
Recoveries | 3 |  | 10 |
Ending balance | 2,124 |  | 2,124 |
Beginning balance |  | 2,609 |  | 2,334
Provision - incurred loss |  | (79) |  | 208
Charge-offs |  | (10) |  | (30)
Recoveries |  | 5 |  | 13
Ending balance |  | 2,525 |  | 2,525
Commercial real estate loans | Commercial owner-occupied |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning balance | 2,037 |  | 2,778 |
Provision (reversal) - CECL | (30) |  | (771) |
Initial allowance for PCD loans | 559 |  | 559 |
Charge-offs | 0 |  | 0 |
Recoveries | 0 |  | 0 |
Ending balance | 2,566 |  | 2,566 |
Beginning balance |  | 2,910 |  | 2,462
Provision - incurred loss |  | 225 |  | 673
Charge-offs |  | 0 |  | 0
Recoveries |  | 0 |  | 0
Ending balance |  | 3,135 |  | 3,135
Commercial real estate loans | Commercial investor-owned |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning balance | 10,761 |  | 12,682 |
Provision (reversal) - CECL | 1,011 |  | (910) |
Initial allowance for PCD loans | 533 |  | 533 |
Charge-offs | 0 |  | 0 |
Recoveries | 0 |  | 0 |
Ending balance | 12,305 |  | 12,305 |
Beginning balance |  | 10,403 |  | 8,483
Provision - incurred loss |  | 1,221 |  | 3,141
Charge-offs |  | 0 |  | 0
Recoveries |  | 0 |  | 0
Ending balance |  | 11,624 |  | 11,624
Commercial real estate loans | Construction |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning balance | 1,142 |  | 1,557 |
Provision (reversal) - CECL | 77 |  | (356) |
Initial allowance for PCD loans | 0 |  | 0 |
Charge-offs | 0 |  | 0 |
Recoveries | 8 |  | 26 |
Ending balance | 1,227 |  | 1,227 |
Beginning balance |  | 836 |  | 638
Provision - incurred loss |  | 24 |  | 219
Charge-offs |  | 0 |  | 0
Recoveries |  | 0 |  | 3
Ending balance |  | 860 |  | 860
Residential loans | Home equity |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning balance | 412 |  | 738 |
Provision (reversal) - CECL | 247 |  | (129) |
Initial allowance for PCD loans | 0 |  | 0 |
Charge-offs | 0 |  | 0 |
Recoveries | 0 |  | 50 |
Ending balance | 659 |  | 659 |
Beginning balance |  | 1,044 |  | 850
Provision - incurred loss |  | (6) |  | 188
Charge-offs |  | 0 |  | 0
Recoveries |  | 0 |  | 0
Ending balance |  | 1,038 |  | 1,038
Residential loans | Other residential |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning balance | 613 |  | 998 |
Provision (reversal) - CECL | 4 |  | (381) |
Initial allowance for PCD loans | 6 |  | 6 |
Charge-offs | 0 |  | 0 |
Recoveries | 0 |  | 0 |
Ending balance | 623 |  | 623 |
Beginning balance |  | 1,266 |  | 973
Provision - incurred loss |  | (6) |  | 287
Charge-offs |  | 0 |  | 0
Recoveries |  | 0 |  | 0
Ending balance |  | 1,260 |  | 1,260
Consumer loans | Installment and other consumer loans |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning balance | 238 |  | 291 |
Provision (reversal) - CECL | 384 |  | 331 |
Initial allowance for PCD loans | 2 |  | 2 |
Charge-offs | (2) |  | (2) |
Recoveries | 0 |  | 0 |
Ending balance | 622 |  | 622 |
Beginning balance |  | 426 |  | 284
Provision - incurred loss |  | (20) |  | 122
Charge-offs |  | 0 |  | 0
Recoveries |  | 0 |  | 0
Ending balance |  | 406 |  | 406
Unallocated |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |
Beginning balance | 2,307 |  | 1,300 |
Provision (reversal) - CECL | (19) |  | 988 |
Initial allowance for PCD loans | 0 |  | 0 |
Charge-offs | 0 |  | 0 |
Recoveries | 0 |  | 0 |
Ending balance | $ 2,288 |  | $ 2,288 |
Beginning balance |  | 1,374 |  | 653
Provision - incurred loss |  | (109) |  | 612
Charge-offs |  | 0 |  | 0
Recoveries |  | 0 |  | 0
Ending balance |  | $ 1,265 |  | $ 1,265

X
- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + 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)(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 loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + 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)(3) -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 allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=122038336&loc=d3e74567-122707 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 (g) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 Reference 4: 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 + Details
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