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Loans and Allowance for Credit Losses - PCD Loans (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Non-credit related discount | $ 29,100 | $ 21,500
Landmark Community Bank |  |
Financing Receivable, Allowance for Credit Loss [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 |
Triumph Bancshares Inc |  |
Financing Receivable, Allowance for Credit Loss [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 |
Spirit of Texas Bancshares, Inc. |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Unpaid principal balance | 74,851 |
PCD allowance for credit loss at acquisition | (5,100) |
Non-credit related discount | (1,377) |
Fair value of PCD loans | 68,374 |
Commercial | Landmark Community Bank |  |
Financing Receivable, Allowance for Credit Loss [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 |
Commercial | Triumph Bancshares Inc |  |
Financing Receivable, Allowance for Credit Loss [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 |
Commercial | Spirit of Texas Bancshares, Inc. |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Unpaid principal balance | 8,258 |
PCD allowance for credit loss at acquisition | (1,911) |
Non-credit related discount | (378) |
Fair value of PCD loans | 5,969 |
Real Estate | Landmark Community Bank |  |
Financing Receivable, Allowance for Credit Loss [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 |
Real Estate | Triumph Bancshares Inc |  |
Financing Receivable, Allowance for Credit Loss [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 |
Real Estate | Spirit of Texas Bancshares, Inc. |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Unpaid principal balance | 66,534 |
PCD allowance for credit loss at acquisition | (3,187) |
Non-credit related discount | (998) |
Fair value of PCD loans | 62,349 |
Credit cards | Landmark Community Bank |  |
Financing Receivable, Allowance for Credit Loss [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 |
Credit cards | Triumph Bancshares Inc |  |
Financing Receivable, Allowance for Credit Loss [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 |
Credit cards | Spirit of Texas Bancshares, Inc. |  |
Financing Receivable, Allowance for Credit Loss [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 |
Other Consumer and Other | Landmark Community Bank |  |
Financing Receivable, Allowance for Credit Loss [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 |
Other Consumer and Other | Triumph Bancshares Inc |  |
Financing Receivable, Allowance for Credit Loss [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 |
Other Consumer and Other | Spirit of Texas Bancshares, Inc. |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Unpaid principal balance | 59 |
PCD allowance for credit loss at acquisition | (2) |
Non-credit related discount | (1) |
Fair value of PCD loans | $ 56 |

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