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Portfolio Loans - Summary of Allowance for Loan Losses by Portfolio Class and Category (Details) - Non-Covered Loans - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Allowance for Loan Losses [Roll Forward] |  |  |
Balance, beginning of year | $ 42,295 | $ 38,166 | $ 37,565
Provision for loan losses | 6,682 | 9,813 | 10,764
Charge-offs | (8,594) | (7,976) | (11,507)
Recoveries | 2,184 | 2,292 | 1,344
Balance, end of year | 42,567 | 42,295 | 38,166
Commercial and industrial |  |  |
Allowance for Loan Losses [Roll Forward] |  |  |
Balance, beginning of year | 29,039 | 26,406 | 26,996
Provision for loan losses | 4,801 | 8,394 | 8,737
Charge-offs | (6,882) | (6,894) | (9,872)
Recoveries | 338 | 1,133 | 545
Balance, end of year | 27,296 | 29,039 | 26,406
CRE - investor owned |  |  |
Allowance for Loan Losses [Roll Forward] |  |  |
Balance, beginning of year | 4,683 | 3,890 | 3,420
Provision for loan losses | 1,708 | 709 | 456
Charge-offs | (551) | 0 | (117)
Recoveries | 95 | 84 | 131
Balance, end of year | 5,935 | 4,683 | 3,890
CRE - owner occupied |  |  |
Allowance for Loan Losses [Roll Forward] |  |  |
Balance, beginning of year | 4,239 | 3,308 | 2,890
Provision for loan losses | 673 | 1,216 | 404
Charge-offs | (58) | (313) | (90)
Recoveries | 19 | 28 | 104
Balance, end of year | 4,873 | 4,239 | 3,308
Construction and land development |  |  |
Allowance for Loan Losses [Roll Forward] |  |  |
Balance, beginning of year | 1,987 | 1,487 | 1,304
Provision for loan losses | (237) | 97 | 336
Charge-offs | (54) | (56) | (254)
Recoveries | 776 | 459 | 101
Balance, end of year | 2,472 | 1,987 | 1,487
Residential real estate |  |  |
Allowance for Loan Losses [Roll Forward] |  |  |
Balance, beginning of year | 1,616 | 2,237 | 2,023
Provision for loan losses | (330) | (583) | 797
Charge-offs | (667) | (546) | (973)
Recoveries | 661 | 508 | 390
Balance, end of year | 1,280 | 1,616 | 2,237
Consumer and other |  |  |
Allowance for Loan Losses [Roll Forward] |  |  |
Balance, beginning of year | 731 | 838 | 932
Provision for loan losses | 67 | (20) | 34
Charge-offs | (382) | (167) | (201)
Recoveries | 295 | 80 | 73
Balance, end of year | $ 711 | $ 731 | $ 838

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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + 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=118955255&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: 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=119407570&loc=SL82919249-210447 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)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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