Stockholders' Equity - Required Capital Amounts and Company's Respective Ratios (Detail) $ in Thousands	Jun. 30, 2025 USD ($)
Parent Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital Amount	$ 1,734,570
Total Capital To Risk Weighted Assets Actual Ratio	0.1962
Capital Required For Capital Adequacy Amount	$ 707,153
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio	0.08
Capital With Capital Conservation Buffer Amount	$ 928,138
Capital With Capital Conservation To Risk Based Weighted Assets Buffer Ratio	0.105
Common Equity Tier 1 Risk Based Capital Amount	$ 1,551,928
Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	0.1756
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Amount	$ 397,774
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	0.045
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer Amount	$ 618,759
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio	0.07
Tier 1 Risk Based Capital Amount	$ 1,577,928
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	0.1785
Tier 1 Risk Based Capital Required For Capital Adequacy Amount	$ 530,365
Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	0.06
Tier 1 Risk Based Capital With Capital Conservation Buffer Amount	$ 751,350
Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio	0.085
Tier 1 Capital Amount	$ 1,577,928
Tier 1 Capital To Quarterly Average Assets Ratio	0.1143
Tier 1 Capital Required For Capital Adequacy Amount	$ 552,278
Tier 1 Capital Required For Capital Adequacy To Quarterly Average Assets Ratio	0.04
Banc First [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital Amount	$ 1,308,924
Total Capital To Risk Weighted Assets Actual Ratio	0.1786
Capital Required For Capital Adequacy Amount	$ 586,412
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio	0.08
Capital With Capital Conservation Buffer Amount	$ 769,666
Capital With Capital Conservation To Risk Based Weighted Assets Buffer Ratio	0.105
Capital Required To Be Well Capitalized Amount	$ 733,015
Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	0.10
Common Equity Tier 1 Risk Based Capital Amount	$ 1,205,694
Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	0.1645
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Amount	$ 329,857
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	0.045
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer Amount	$ 513,111
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio	0.07
Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized Amount	$ 476,460
Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	0.065
Tier 1 Risk Based Capital Amount	$ 1,225,694
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	0.1672
Tier 1 Risk Based Capital Required For Capital Adequacy Amount	$ 439,809
Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	0.06
Tier 1 Risk Based Capital With Capital Conservation Buffer Amount	$ 623,063
Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio	0.085
Tier 1 Risk Based Capital Required To Be Well Capitalized Amount	$ 586,412
Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	0.08
Tier 1 Capital Amount	$ 1,225,694
Tier 1 Capital To Quarterly Average Assets Ratio	0.1046
Tier 1 Capital Required For Capital Adequacy Amount	$ 468,648
Tier 1 Capital Required For Capital Adequacy To Quarterly Average Assets Ratio	0.04
Tier 1 Capital Required To Be Well Capitalized Amount	$ 585,810
Tier 1 Capital Required To Be Well Capitalized To Quarterly Average Assets Ratio	0.05
Pegasus [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital Amount	$ 160,711
Total Capital To Risk Weighted Assets Actual Ratio	0.1688
Capital Required For Capital Adequacy Amount	$ 76,179
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio	0.08
Capital With Capital Conservation Buffer Amount	$ 99,984
Capital With Capital Conservation To Risk Based Weighted Assets Buffer Ratio	0.105
Capital Required To Be Well Capitalized Amount	$ 95,223
Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	0.10
Common Equity Tier 1 Risk Based Capital Amount	$ 150,732
Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	0.1583
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Amount	$ 42,850
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	0.045
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer Amount	$ 66,656
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio	0.07
Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized Amount	$ 61,895
Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	0.065
Tier 1 Risk Based Capital Amount	$ 150,732
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	0.1583
Tier 1 Risk Based Capital Required For Capital Adequacy Amount	$ 57,134
Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	0.06
Tier 1 Risk Based Capital With Capital Conservation Buffer Amount	$ 80,940
Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio	0.085
Tier 1 Risk Based Capital Required To Be Well Capitalized Amount	$ 76,179
Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	0.08
Tier 1 Capital Amount	$ 150,732
Tier 1 Capital To Quarterly Average Assets Ratio	0.1078
Tier 1 Capital Required For Capital Adequacy Amount	$ 55,925
Tier 1 Capital Required For Capital Adequacy To Quarterly Average Assets Ratio	0.04
Tier 1 Capital Required To Be Well Capitalized Amount	$ 69,907
Tier 1 Capital Required To Be Well Capitalized To Quarterly Average Assets Ratio	0.05
Worthington [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital Amount	$ 58,917
Total Capital To Risk Weighted Assets Actual Ratio	0.121
Capital Required For Capital Adequacy Amount	$ 38,946
Capital Required For Capital Adequacy to Risk Weighted Assets Ratio	0.08
Capital With Capital Conservation Buffer Amount	$ 51,116
Capital With Capital Conservation To Risk Based Weighted Assets Buffer Ratio	0.105
Capital Required To Be Well Capitalized Amount	$ 48,682
Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	0.10
Common Equity Tier 1 Risk Based Capital Amount	$ 54,365
Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	0.1117
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Amount	$ 21,907
Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	0.045
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer Amount	$ 34,078
Common Equity Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio	0.07
Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized Amount	$ 31,644
Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	0.065
Tier 1 Risk Based Capital Amount	$ 54,365
Tier 1 Risk Based Capital To Risk Weighted Assets Ratio	0.1117
Tier 1 Risk Based Capital Required For Capital Adequacy Amount	$ 29,209
Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Ratio	0.06
Tier 1 Risk Based Capital With Capital Conservation Buffer Amount	$ 41,380
Tier 1 Risk Based Capital With Capital Conservation Buffer To Risk Weighted Assets Ratio	0.085
Tier 1 Risk Based Capital Required To Be Well Capitalized Amount	$ 38,946
Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Ratio	0.08
Tier 1 Capital Amount	$ 54,365
Tier 1 Capital To Quarterly Average Assets Ratio	0.0875
Tier 1 Capital Required For Capital Adequacy Amount	$ 24,865
Tier 1 Capital Required For Capital Adequacy To Quarterly Average Assets Ratio	0.04
Tier 1 Capital Required To Be Well Capitalized Amount	$ 31,081
Tier 1 Capital Required To Be Well Capitalized To Quarterly Average Assets Ratio	0.05