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Stockholders' Equity - Required Capital Amounts and Company's Respective Ratios (Detail) $ in Thousands | Jun. 30, 2020 USD ($)
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Parent Company [Member] |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |
Total Capital Amount | $ 960,793
Total Capital To Risk Weighted Assets Actual Ratio | 14.83%
Capital Required For Capital Adequacy Amount | $ 518,290
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio | 8.00%
Capital With Capital Conservation Buffer Amount | $ 680,256
Capital With Capital Conservation To Risk Based Weighted Assets Buffer Ratio | 10.50%
Common Equity Tier 1 Risk Based Capital Amount | $ 853,705
Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Ratio | 13.18%
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Amount | $ 291,538
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio | 4.50%
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer Amount | $ 453,504
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio | 7.00%
Tier 1 Risk Based Capital Amount | $ 879,705
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio | 13.58%
Tier 1 Risk Based Capital Required For Capital Adequacy Amount | $ 388,718
Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio | 6.00%
Tier 1 Risk Based Capital With Capital Conservation Buffer Amount | $ 550,683
Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio | 8.50%
Tier 1 Capital Amount | $ 879,705
Tier 1 Capital To Average Assets Ratio | 9.45%
Tier 1 Capital Required For Capital Adequacy Amount | $ 372,344
Tier 1 Capital Required For Capital Adequacy To Average Assets Ratio | 4.00%
BancFirst [Member] |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |
Total Capital Amount | $ 871,013
Total Capital To Risk Weighted Assets Actual Ratio | 14.62%
Capital Required For Capital Adequacy Amount | $ 476,462
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio | 8.00%
Capital With Capital Conservation Buffer Amount | $ 625,357
Capital With Capital Conservation To Risk Based Weighted Assets Buffer Ratio | 10.50%
Capital Required To Be Well Capitalized Amount | $ 595,578
Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio | 10.00%
Common Equity Tier 1 Risk Based Capital Amount | $ 776,428
Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Ratio | 13.04%
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Amount | $ 268,010
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio | 4.50%
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer Amount | $ 416,905
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio | 7.00%
Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized Amount | $ 387,126
Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio | 6.50%
Tier 1 Risk Based Capital Amount | $ 796,428
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio | 13.37%
Tier 1 Risk Based Capital Required For Capital Adequacy Amount | $ 357,347
Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio | 6.00%
Tier 1 Risk Based Capital With Capital Conservation Buffer Amount | $ 506,241
Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio | 8.50%
Tier 1 Risk Based Capital Required To Be Well Capitalized Amount | $ 476,462
Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio | 8.00%
Tier 1 Capital Amount | $ 796,428
Tier 1 Capital To Average Assets Ratio | 9.33%
Tier 1 Capital Required For Capital Adequacy Amount | $ 341,272
Tier 1 Capital Required For Capital Adequacy To Average Assets Ratio | 4.00%
Tier 1 Capital Required To Be Well Capitalized Amount | $ 426,591
Tier 1 Capital Required To Be Well Capitalized To Average Assets Ratio | 5.00%
Pegasus Bank [Member] |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |
Total Capital Amount | $ 67,867
Total Capital To Risk Weighted Assets Actual Ratio | 13.28%
Capital Required For Capital Adequacy Amount | $ 40,893
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio | 8.00%
Capital With Capital Conservation Buffer Amount | $ 53,672
Capital With Capital Conservation To Risk Based Weighted Assets Buffer Ratio | 10.50%
Capital Required To Be Well Capitalized Amount | $ 51,116
Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio | 10.00%
Common Equity Tier 1 Risk Based Capital Amount | $ 63,636
Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Ratio | 12.45%
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Amount | $ 23,002
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio | 4.50%
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer Amount | $ 35,781
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio | 7.00%
Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized Amount | $ 33,226
Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio | 6.50%
Tier 1 Risk Based Capital Amount | $ 63,636
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio | 12.45%
Tier 1 Risk Based Capital Required For Capital Adequacy Amount | $ 30,670
Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio | 6.00%
Tier 1 Risk Based Capital With Capital Conservation Buffer Amount | $ 43,449
Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio | 8.50%
Tier 1 Risk Based Capital Required To Be Well Capitalized Amount | $ 40,893
Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio | 8.00%
Tier 1 Capital Amount | $ 63,636
Tier 1 Capital To Average Assets Ratio | 8.34%
Tier 1 Capital Required For Capital Adequacy Amount | $ 30,517
Tier 1 Capital Required For Capital Adequacy To Average Assets Ratio | 4.00%
Tier 1 Capital Required To Be Well Capitalized Amount | $ 38,146
Tier 1 Capital Required To Be Well Capitalized To Average Assets Ratio | 5.00%

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