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Loans and Allowance for Credit Losses - Detail activity in the allowance for credit losses by portfolio segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | $ 73,658 | $ 69,944
Loans charged-off | (20,259) | (10,219)
Recoveries of loans previously charged-off | 162 | 842
Net loans charged-off | (20,097) | (9,377)
Provision for credit losses | 45,404 | 13,091
Individually evaluated for impairment | 15,442 | 9,124
Collectively evaluated for impairment | 94,137 | 64,534
Balance at December 31, | 109,579 | 73,658
Cumulative Effect, Period of Adoption, Adjustment |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | 10,614 |
Balance at December 31, |  | 10,614
Commercial |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | 18,832 | 15,857
Loans charged-off | (12,082) | (4,868)
Recoveries of loans previously charged-off | 130 | 405
Net loans charged-off | (11,952) | (4,463)
Provision for credit losses | 18,797 | 7,438
Individually evaluated for impairment | 7,343 | 5,714
Collectively evaluated for impairment | 19,226 | 13,118
Balance at December 31, | 26,569 | 18,832
Commercial | Cumulative Effect, Period of Adoption, Adjustment |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | 892 |
Balance at December 31, |  | 892
Income producing - commercial real estate |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | 29,265 | 28,034
Loans charged-off | (4,300) | (1,847)
Recoveries of loans previously charged-off | 0 | 26
Net loans charged-off | (4,300) | (1,821)
Provision for credit losses | 19,190 | 3,052
Individually evaluated for impairment | 6,425 | 2,145
Collectively evaluated for impairment | 48,960 | 27,120
Balance at December 31, | 55,385 | 29,265
Income producing - commercial real estate | Cumulative Effect, Period of Adoption, Adjustment |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | 11,230 |
Balance at December 31, |  | 11,230
Owner occupied - commercial real estate |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | 5,838 | 6,242
Loans charged-off | (20) | 0
Recoveries of loans previously charged-off | 0 | 3
Net loans charged-off | (20) | 3
Provision for credit losses | 3,508 | (407)
Individually evaluated for impairment | 1,241 | 415
Collectively evaluated for impairment | 12,759 | 5,423
Balance at December 31, | 14,000 | 5,838
Owner occupied - commercial real estate | Cumulative Effect, Period of Adoption, Adjustment |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | 4,674 |
Balance at December 31, |  | 4,674
Real estate mortgage - residential |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | 1,557 | 965
Loans charged-off | (815) | 0
Recoveries of loans previously charged-off | 0 | 3
Net loans charged-off | (815) | 3
Provision for credit losses | 579 | 589
Individually evaluated for impairment | 330 | 650
Collectively evaluated for impairment | 690 | 907
Balance at December 31, | 1,020 | 1,557
Real estate mortgage - residential | Cumulative Effect, Period of Adoption, Adjustment |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | (301) |
Balance at December 31, |  | (301)
Construction - commercial and residential |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | 17,485 | 18,175
Loans charged-off | (2,947) | (3,496)
Recoveries of loans previously charged-off | 4 | 354
Net loans charged-off | (2,943) | (3,142)
Provision for credit losses | 3,130 | 2,452
Individually evaluated for impairment | 103 | 100
Collectively evaluated for impairment | 11,426 | 17,385
Balance at December 31, | 11,529 | 17,485
Construction - commercial and residential | Cumulative Effect, Period of Adoption, Adjustment |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | (6,143) |
Balance at December 31, |  | (6,143)
Home equity |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | 656 | 599
Loans charged-off | (92) | 0
Recoveries of loans previously charged-off | 0 | 0
Net loans charged-off | (92) | 0
Provision for credit losses | 230 | 57
Individually evaluated for impairment | 0 | 100
Collectively evaluated for impairment | 1,039 | 556
Balance at December 31, | 1,039 | 656
Home equity | Cumulative Effect, Period of Adoption, Adjustment |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | 245 |
Balance at December 31, |  | 245
Other consumer |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | 25 | 72
Loans charged-off | (3) | (8)
Recoveries of loans previously charged-off | 28 | 51
Net loans charged-off | 25 | 43
Provision for credit losses | (30) | (90)
Individually evaluated for impairment | 0 | 0
Collectively evaluated for impairment | 37 | 25
Balance at December 31, | 37 | 25
Other consumer | Cumulative Effect, Period of Adoption, Adjustment |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |
Balance at January 1, | $ 17 |
Balance at December 31, |  | $ 17

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- 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=121611835&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=121611835&loc=SL6953423-111524 + Details
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