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Stockholders' Equity - Required Capital Amounts and Company's Respective Ratios (Detail) $ in Thousands | Jun. 30, 2021 USD ($)
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Parent Company [Member] |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |
Total Capital Amount | $ 1,123,056
Total Capital To Risk Weighted Assets Actual Ratio | 17.35
Capital Required For Capital Adequacy Amount | $ 517,721
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio | 8.00
Capital With Capital Conservation Buffer Amount | $ 679,508
Capital With Capital Conservation To Risk Based Weighted Assets Buffer Ratio | 10.50
Common Equity Tier 1 Risk Based Capital Amount | $ 956,969
Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Ratio | 14.79
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Amount | $ 291,218
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 | $ 453,006
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio | 7.00
Tier 1 Risk Based Capital Amount | $ 982,969
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio | 15.19
Tier 1 Risk Based Capital Required For Capital Adequacy Amount | $ 388,291
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 | $ 550,078
Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio | 8.50
Tier 1 Capital Amount | $ 982,969
Tier 1 Capital To Average Assets Ratio | 9.23
Tier 1 Capital Required For Capital Adequacy Amount | $ 425,962
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 | $ 954,496
Total Capital To Risk Weighted Assets Actual Ratio | 16.23
Capital Required For Capital Adequacy Amount | $ 470,400
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio | 8.00
Capital With Capital Conservation Buffer Amount | $ 617,400
Capital With Capital Conservation To Risk Based Weighted Assets Buffer Ratio | 10.50
Capital Required To Be Well Capitalized Amount | $ 588,000
Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio | 10.00
Common Equity Tier 1 Risk Based Capital Amount | $ 860,924
Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Ratio | 14.64
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Amount | $ 264,600
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 | $ 411,600
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 | $ 382,200
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 | $ 880,924
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio | 14.98
Tier 1 Risk Based Capital Required For Capital Adequacy Amount | $ 352,800
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 | $ 499,800
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 | $ 470,400
Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio | 8.00
Tier 1 Capital Amount | $ 880,924
Tier 1 Capital To Average Assets Ratio | 9.13
Tier 1 Capital Required For Capital Adequacy Amount | $ 385,803
Tier 1 Capital Required For Capital Adequacy To Average Assets Ratio | 4.00
Tier 1 Capital Required To Be Well Capitalized Amount | $ 482,254
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 | $ 76,186
Total Capital To Risk Weighted Assets Actual Ratio | 12.61
Capital Required For Capital Adequacy Amount | $ 48,317
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio | 8.00
Capital With Capital Conservation Buffer Amount | $ 63,416
Capital With Capital Conservation To Risk Based Weighted Assets Buffer Ratio | 10.50
Capital Required To Be Well Capitalized Amount | $ 60,396
Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio | 10.00
Common Equity Tier 1 Risk Based Capital Amount | $ 71,113
Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Ratio | 11.77
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Amount | $ 27,178
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 | $ 42,277
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 | $ 39,257
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 | $ 71,113
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio | 11.77
Tier 1 Risk Based Capital Required For Capital Adequacy Amount | $ 36,238
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 | $ 51,337
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 | $ 48,317
Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio | 8.00
Tier 1 Capital Amount | $ 71,113
Tier 1 Capital To Average Assets Ratio | 7.15
Tier 1 Capital Required For Capital Adequacy Amount | $ 39,786
Tier 1 Capital Required For Capital Adequacy To Average Assets Ratio | 4.00
Tier 1 Capital Required To Be Well Capitalized Amount | $ 49,733
Tier 1 Capital Required To Be Well Capitalized To Average Assets Ratio | 5.00

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