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Regulatory Matters - Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations (Details) $ in Thousands | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
--- | --- | ---
Great Southern Bancorp, Inc. |  |
Total capital |  |
Actual capital, Amount | $ 770,885 | $ 746,287
Actual capital, Ratio | 0.152 | 0.135
For Capital Adequacy Purposes, Amount | $ 406,994 | $ 440,767
For Capital Adequacy Purposes, Ratio | 0.080 | 0.080
Tier I capital |  |
Actual capital, Amount | $ 632,279 | $ 607,807
Actual capital, Ratio | 0.124 | 0.110
For Capital Adequacy Purposes, Amount | $ 305,246 | $ 330,575
For Capital Adequacy Purposes, Ratio | 0.060 | 0.060
Tier I leverage capital |  |
Actual capital, Amount | $ 632,279 | $ 607,807
Actual capital, Ratio | 0.110 | 0.106
For Capital Adequacy Purposes, Amount | $ 229,992 | $ 228,673
For Capital Adequacy Purposes, Ratio | 0.040 | 0.040
Common equity Tier I capital |  |
Actual capital, Amount | $ 607,279 | $ 582,807
Actual capital, Ratio | 0.119 | 0.106
For Capital Adequacy Purposes, Amount | $ 228,934 | $ 247,932
For Capital Adequacy Purposes, Ratio | 0.045 | 0.045
Great Southern Bank |  |
Total capital |  |
Actual capital, Amount | $ 728,113 | $ 721,616
Actual capital, Ratio | 0.143 | 0.131
For Capital Adequacy Purposes, Amount | $ 406,744 | $ 440,683
For Capital Adequacy Purposes, Ratio | 0.080 | 0.080
To Be Well capitalized Under Prompt Corrective Action Provisions, Amount | $ 508,430 | $ 550,854
To Be Well capitalized Under Prompt Corrective Action Provisions, Ratio | 0.100 | 0.100
Tier I capital |  |
Actual capital, Amount | $ 664,545 | $ 658,136
Actual capital, Ratio | 0.131 | 0.119
For Capital Adequacy Purposes, Amount | $ 305,058 | $ 330,512
For Capital Adequacy Purposes, Ratio | 0.060 | 0.060
To Be Well capitalized Under Prompt Corrective Action Provisions, Amount | $ 406,744 | $ 440,683
To Be Well capitalized Under Prompt Corrective Action Provisions, Ratio | 0.080 | 0.080
Tier I leverage capital |  |
Actual capital, Amount | $ 664,545 | $ 658,136
Actual capital, Ratio | 0.116 | 0.115
For Capital Adequacy Purposes, Amount | $ 229,692 | $ 228,511
For Capital Adequacy Purposes, Ratio | 0.040 | 0.040
To Be Well capitalized Under Prompt Corrective Action Provisions, Amount | $ 287,115 | $ 285,638
To Be Well capitalized Under Prompt Corrective Action Provisions, Ratio | 0.050 | 0.050
Common equity Tier I capital |  |
Actual capital, Amount | $ 664,545 | $ 658,136
Actual capital, Ratio | 0.131 | 0.119
For Capital Adequacy Purposes, Amount | $ 228,794 | $ 247,884
For Capital Adequacy Purposes, Ratio | 0.045 | 0.045
To Be Well capitalized Under Prompt Corrective Action Provisions, Amount | $ 330,480 | $ 358,055
To Be Well capitalized Under Prompt Corrective Action Provisions, Ratio | 0.065 | 0.065

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