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Loans and Allowance for Credit Losses - Nonaccrual and Past Due Greater than 90 Days (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual loans | $ 70,970 | $ 61,605
Financing Receivable, 90 Days or More Past Due, Still Accruing | 1,990 | 1,615
Financing Receivable, Nonaccrual, No Allowance | 27,986 |
Commercial real estate- owner occupied |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual loans | 11,324 | 11,654
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Financing Receivable, Nonaccrual, No Allowance | 4,465 |
Commercial real estate- Non-owner occupied |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual loans | 9,376 | 7,173
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Financing Receivable, Nonaccrual, No Allowance | 6,425 |
Consumer real estate – mortgage |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual loans | 26,106 | 24,667
Financing Receivable, 90 Days or More Past Due, Still Accruing | 517 | 168
Financing Receivable, Nonaccrual, No Allowance | 379 |
Construction and land development |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual loans | 2,390 | 2,278
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Financing Receivable, Nonaccrual, No Allowance | 1,287 |
Commercial and industrial |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual loans | 21,716 | 15,685
Financing Receivable, 90 Days or More Past Due, Still Accruing | 1,089 | 946
Financing Receivable, Nonaccrual, No Allowance | 15,430 |
Consumer and other |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual loans | 58 | 148
Financing Receivable, 90 Days or More Past Due, Still Accruing | 384 | $ 501
Financing Receivable, Nonaccrual, No Allowance | $ 0 |

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- Definition Amount of financing receivable on nonaccrual status with no 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 16 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447 + Details
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- Definition Amount of financing receivable 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5111-111524 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922355-210448 + Details
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- Definition Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5111-111524 + Details
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