v3.26.1
Capital and Regulatory Matters - Actual Capital Amounts and Ratios (Details)
$ in Thousands
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Origin Bancorp, Inc.    
Common Equity Tier 1 Capital to Risk-Weighted Assets    
Actual, amount $ 1,183,748 $ 1,139,627
Actual, ratio 0.1341 0.1354
Minimum capital required, amount $ 617,915 $ 589,364
Minimum capital required, ratio 0.0700 0.0700
Tier 1 Capital to Risk-Weighted Assets    
Actual, amount $ 1,199,799 $ 1,155,628
Actual, ratio 0.1359 0.1373
Minimum capital required, amount $ 750,426 $ 715,658
Minimum capital required, ratio 0.0850 0.0850
Total Capital to Risk-Weighted Assets    
Actual, amount $ 1,301,623 $ 1,255,717
Actual, ratio 0.1474 0.1491
Minimum capital required, amount $ 927,208 $ 884,171
Minimum capital required, ratio 0.1050 0.1050
Leverage Ratio    
Actual, amount $ 1,199,799 $ 1,155,628
Actual, ratio 0.1205 0.1186
Minimum capital required, amount $ 398,274 $ 389,648
Minimum capital required, ratio 0.0400 0.0400
Origin Bank | Origin Bank    
Common Equity Tier 1 Capital to Risk-Weighted Assets    
Actual, amount $ 1,122,647 $ 1,054,279
Actual, ratio 0.1280 0.1262
Minimum capital required, amount $ 613,948 $ 584,801
Minimum capital required, ratio 0.0700 0.0700
To be well capitalized under prompt corrective action provisions, amount $ 570,094 $ 543,029
To be well capitalized under prompt corrective action provisions, ratio 6.50% 6.50%
Tier 1 Capital to Risk-Weighted Assets    
Actual, amount $ 1,122,647 $ 1,054,279
Actual, ratio 0.1280 0.1262
Minimum capital required, amount $ 745,508 $ 710,115
Minimum capital required, ratio 0.0850 0.0850
To be well capitalized under prompt corrective action provisions, amount $ 701,654 $ 668,344
To be well capitalized under prompt corrective action provisions, ratio 0.0800 0.0800
Total Capital to Risk-Weighted Assets    
Actual, amount $ 1,224,471 $ 1,154,368
Actual, ratio 0.1397 0.1382
Minimum capital required, amount $ 920,325 $ 877,205
Minimum capital required, ratio 0.1050 0.1050
To be well capitalized under prompt corrective action provisions, amount $ 876,500 $ 835,433
To be well capitalized under prompt corrective action provisions, ratio 0.1000 0.1000
Leverage Ratio    
Actual, amount $ 1,122,647 $ 1,054,279
Actual, ratio 0.1137 0.1091
Minimum capital required, amount $ 394,951 $ 386,406
Minimum capital required, ratio 0.0400 0.0400
To be well capitalized under prompt corrective action provisions, amount $ 493,688 $ 483,007
To be well capitalized under prompt corrective action provisions, ratio 0.0500 0.0500