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Loans and Allowance for Credit Losses - Purchased With Credit Deterioration (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Non-credit related discount | $ (21,500) | $ (57,300)
Landmark Bank |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unpaid principal balance | 66,662 |
PCD allowance for credit loss at acquisition | (2,359) |
Non-credit related discount | (2,577) |
Fair value of PCD loans | 61,726 |
Landmark Bank | Other Consumer and Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unpaid principal balance | 67 |
PCD allowance for credit loss at acquisition | (1) |
Non-credit related discount | (2) |
Fair value of PCD loans | 64 |
Landmark Bank | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unpaid principal balance | 11,046 |
PCD allowance for credit loss at acquisition | (350) |
Non-credit related discount | (160) |
Fair value of PCD loans | 10,536 |
Landmark Bank | Real Estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unpaid principal balance | 55,549 |
PCD allowance for credit loss at acquisition | (2,008) |
Non-credit related discount | (2,415) |
Fair value of PCD loans | 51,126 |
Landmark Bank | Consumer | Credit cards |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unpaid principal balance | 0 |
PCD allowance for credit loss at acquisition | 0 |
Non-credit related discount | 0 |
Fair value of PCD loans | 0 |
Triumph |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unpaid principal balance | 121,284 |
PCD allowance for credit loss at acquisition | (11,092) |
Non-credit related discount | (1,594) |
Fair value of PCD loans | 108,598 |
Triumph | Other Consumer and Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unpaid principal balance | 15 |
PCD allowance for credit loss at acquisition | 0 |
Non-credit related discount | (1) |
Fair value of PCD loans | 14 |
Triumph | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unpaid principal balance | 40,466 |
PCD allowance for credit loss at acquisition | (2,999) |
Non-credit related discount | (279) |
Fair value of PCD loans | 37,188 |
Triumph | Real Estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unpaid principal balance | 80,803 |
PCD allowance for credit loss at acquisition | (8,093) |
Non-credit related discount | (1,314) |
Fair value of PCD loans | 71,396 |
Triumph | Consumer | Credit cards |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unpaid principal balance | 0 |
PCD allowance for credit loss at acquisition | 0 |
Non-credit related discount | 0 |
Fair value of PCD loans | $ 0 |

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- Definition Financing Receivable, Purchased With Credit Deterioration, Unpaid Principal Balance + References No definition available. + Details
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- Definition Amount of allowance for credit loss at acquisition date of financing receivable purchased with credit deterioration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 19 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919265-210447 + Details
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- Definition Amount of discount (premium) attributable to other factors on financing receivable purchased with credit deterioration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 19 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919265-210447 + Details
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