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Regulatory Matters - Schedule of Actual Capital Amounts and Ratios (Details) $ in Thousands | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
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Triumph Financial, Inc. |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Total Capital (to Risk Weighted Assets) Actual Amount | $ 769,846 | $ 829,928
Total Capital (to Risk Weighted Assets) Actual Ratio | 0.156 | 0.177
Total Capital (to Risk Weighted Assets) Minimum for Capital Adequacy Purposes Amount | $ 394,793 | $ 375,109
Total Capital (to Risk Weighted Assets) Minimum for Capital Adequacy Purposes Ratio | 0.080 | 0.080
Tier 1 Capital (to Risk Weighted Assets) Actual Amount | $ 626,451 | $ 684,381
Tier 1 Capital (to Risk Weighted Assets) Actual Ratio | 0.127 | 0.146
Tier 1 Capital (to Risk Weighted Assets) Minimum for Capital Adequacy Purposes Amount | $ 295,961 | $ 281,252
Tier 1 Capital (to Risk Weighted Assets) Minimum for Capital Adequacy Purposes Ratio | 0.060 | 0.060
Common Equity Tier 1 Capital (to Risk Weighted Assets) Actual Amount | $ 540,007 | $ 598,223
Common Equity Tier 1 Capital (to Risk Weighted Assets) Actual Ratio | 0.109 | 0.127
Common Equity Tier 1 Capital (to Risk Weighted Assets) Minimum for Capital Adequacy Purposes Amount | $ 222,939 | $ 211,969
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum | 0.045 | 0.045
Tier 1 Capital (to Average Assets) Actual Amount | $ 626,451 | $ 684,381
Tier 1 Capital (to Average Assets) Actual Ratio | 0.120 | 0.130
Tier 1 Capital (to Average Assets) Minimum for Capital Adequacy Purposes Amount | $ 208,817 | $ 210,579
Tier 1 Capital (to Average Assets) Minimum for Capital Adequacy Purposes Ratio | 0.040 | 0.040
TBK Bank, SSB |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Total Capital (to Risk Weighted Assets) Actual Amount | $ 744,838 | $ 732,785
Total Capital (to Risk Weighted Assets) Actual Ratio | 0.152 | 0.158
Total Capital (to Risk Weighted Assets) Minimum for Capital Adequacy Purposes Amount | $ 392,020 | $ 371,030
Total Capital (to Risk Weighted Assets) Minimum for Capital Adequacy Purposes Ratio | 0.080 | 0.080
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount | $ 490,025 | $ 463,788
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio | 0.100 | 0.100
Tier 1 Capital (to Risk Weighted Assets) Actual Amount | $ 712,246 | $ 697,022
Tier 1 Capital (to Risk Weighted Assets) Actual Ratio | 0.145 | 0.150
Tier 1 Capital (to Risk Weighted Assets) Minimum for Capital Adequacy Purposes Amount | $ 294,722 | $ 278,809
Tier 1 Capital (to Risk Weighted Assets) Minimum for Capital Adequacy Purposes Ratio | 0.060 | 0.060
Tier 1 Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount | $ 392,963 | $ 371,745
Tier 1 Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio | 0.080 | 0.080
Common Equity Tier 1 Capital (to Risk Weighted Assets) Actual Amount | $ 712,246 | $ 697,022
Common Equity Tier 1 Capital (to Risk Weighted Assets) Actual Ratio | 0.145 | 0.150
Common Equity Tier 1 Capital (to Risk Weighted Assets) Minimum for Capital Adequacy Purposes Amount | $ 221,042 | $ 209,107
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum | 0.045 | 0.045
Common Equity Tier 1 Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount | $ 319,283 | $ 302,043
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum | 0.065 | 0.065
Tier 1 Capital (to Average Assets) Actual Amount | $ 712,246 | $ 697,022
Tier 1 Capital (to Average Assets) Actual Ratio | 0.137 | 0.132
Tier 1 Capital (to Average Assets) Minimum for Capital Adequacy Purposes Amount | $ 207,955 | $ 211,219
Tier 1 Capital (to Average Assets) Minimum for Capital Adequacy Purposes Ratio | 0.040 | 0.040
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount | $ 259,944 | $ 264,023
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio | 0.050 | 0.050

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