v3.26.1
Pay vs Performance Disclosure
12 Months Ended
Dec. 31, 2025
USD ($)
$ / shares
Dec. 31, 2024
USD ($)
$ / shares
Dec. 31, 2023
USD ($)
$ / shares
Dec. 31, 2022
USD ($)
$ / shares
Dec. 31, 2021
USD ($)
$ / shares
Pay vs Performance Disclosure          
Pay vs Performance Disclosure, Table
YearTotal Compensation for CEO
Compensation Actually Paid to CEO1
Average Total for Other NEOs
Average Compensation Actually Paid to Other NEOs1
Value of $100 Initial Fixed Investment Based on TSR2
Value of $100 Initial Fixed Investment Based on 10‑K Peer Group TSR3
Net Income ($000's)
Company Selected Measure - Core Earnings Per Share4
2025$4,030,080 $4,237,640 $2,069,028 $2,058,569 $135$153$135,262 $2.53
2024$2,847,082 $2,431,467 $1,362,825 $1,196,424 $128$143$113,691 $2.09
2023$2,179,159 $2,542,829 $1,079,862 $674,115 $130$127$122,565 $2.27
2022$2,494,467 $2,234,208 $1,272,385 $1,162,227 $124$127$128,311 $2.38
2021$2,116,540 $3,053,103 $1,096,599 $1,630,556 $131$137$123,449 $2.40
       
Company Selected Measure Name Core Earnings Per Share        
Peer Group Issuers, Footnote Based on initial investment of  $100 as of December 31, 2020, and a cumulative Total Stockholder Return of First Busey and the KBW Nasdaq Regional Banking Index.        
PEO Total Compensation Amount $ 4,030,080 $ 2,847,082 $ 2,179,159 $ 2,494,467 $ 2,116,540
PEO Actually Paid Compensation Amount $ 4,237,640 2,431,467 2,542,829 2,234,208 3,053,103
Adjustment To PEO Compensation, Footnote Amounts represent executive compensation actually paid to our CEO and the average executive compensation actually paid to our NEOs for the relevant fiscal year. Executive compensation actually paid to our NEOs represents the “Total” compensation reported in the Summary Compensation Table for the applicable fiscal year, adjusted as follows:
2025
Summary Compensation for CEO Van A. Dukeman$4,030,080 
Deduction for amounts reported under the “Stock Awards” and “Option Awards” columns in the Summary Compensation Table$(1,939,686)
Addition for the fair value of equity awards granted and related dividend equivalents during the year that remain outstanding and unvested as of year-end$1,972,105 
Addition for the change in fair value of awards granted in prior years that were unvested as of year-end and related dividend equivalents$108,617 
Addition for the change in fair value of awards granted in prior years that vested during year and dividends paid$66,524 
Compensation Actually Paid to CEO$4,237,640 
2025
Average Summary Compensation for NEOs$2,069,028 
Deduction for amounts reported under the “Stock Awards” and “Option Awards” columns in the Summary Compensation Table$(571,264)
Addition for the fair value of equity awards granted and related dividend equivalents during the year that remain outstanding and unvested as of year-end$854,029 
Addition for the change in fair value of awards granted in prior years that were unvested as of year-end and related dividend equivalents$21,553 
Addition for the change in fair value of awards granted in prior years that vested during year and dividends paid$12,066 
Addition for the change in fair value of awards that were forfeited during the year$(326,843)
Average Compensation Actually Paid to NEOs$2,058,569 
NEOs included in Average Summary Compensation and average compensation actually paid(a)
Christopher H.M. Chan
Jeffrey D. Jones
Scott A. Phillips
Michael J. Maddox
Amy L. Randolph
Monica L. Bowe
___________________________________________
(a)Robin N. Elliott was an NEO in 2021, 2022 and 2023 and was therefore included for those years. John J. Powers was an NEO in 2021, 2022, 2023 and 2024 and was therefore included for those years. Mr. Chan, Mr. Phillips and Mr. Maddox were not NEOs in 2021, 2022, 2023 or 2024 and were therefore not included for those years. Ms. Bowe was not an NEO in 2021 or 2022 and was therefore not included for those years.
       
Non-PEO NEO Average Total Compensation Amount $ 2,069,028 1,362,825 1,079,862 1,272,385 1,096,599
Non-PEO NEO Average Compensation Actually Paid Amount $ 2,058,569 1,196,424 674,115 1,162,227 1,630,556
Adjustment to Non-PEO NEO Compensation Footnote Amounts represent executive compensation actually paid to our CEO and the average executive compensation actually paid to our NEOs for the relevant fiscal year. Executive compensation actually paid to our NEOs represents the “Total” compensation reported in the Summary Compensation Table for the applicable fiscal year, adjusted as follows:
2025
Summary Compensation for CEO Van A. Dukeman$4,030,080 
Deduction for amounts reported under the “Stock Awards” and “Option Awards” columns in the Summary Compensation Table$(1,939,686)
Addition for the fair value of equity awards granted and related dividend equivalents during the year that remain outstanding and unvested as of year-end$1,972,105 
Addition for the change in fair value of awards granted in prior years that were unvested as of year-end and related dividend equivalents$108,617 
Addition for the change in fair value of awards granted in prior years that vested during year and dividends paid$66,524 
Compensation Actually Paid to CEO$4,237,640 
2025
Average Summary Compensation for NEOs$2,069,028 
Deduction for amounts reported under the “Stock Awards” and “Option Awards” columns in the Summary Compensation Table$(571,264)
Addition for the fair value of equity awards granted and related dividend equivalents during the year that remain outstanding and unvested as of year-end$854,029 
Addition for the change in fair value of awards granted in prior years that were unvested as of year-end and related dividend equivalents$21,553 
Addition for the change in fair value of awards granted in prior years that vested during year and dividends paid$12,066 
Addition for the change in fair value of awards that were forfeited during the year$(326,843)
Average Compensation Actually Paid to NEOs$2,058,569 
NEOs included in Average Summary Compensation and average compensation actually paid(a)
Christopher H.M. Chan
Jeffrey D. Jones
Scott A. Phillips
Michael J. Maddox
Amy L. Randolph
Monica L. Bowe
___________________________________________
(a)Robin N. Elliott was an NEO in 2021, 2022 and 2023 and was therefore included for those years. John J. Powers was an NEO in 2021, 2022, 2023 and 2024 and was therefore included for those years. Mr. Chan, Mr. Phillips and Mr. Maddox were not NEOs in 2021, 2022, 2023 or 2024 and were therefore not included for those years. Ms. Bowe was not an NEO in 2021 or 2022 and was therefore not included for those years.
       
Compensation Actually Paid vs. Total Shareholder Return
3227
       
Compensation Actually Paid vs. Net Income
3229
       
Compensation Actually Paid vs. Company Selected Measure
3231
       
Total Shareholder Return Vs Peer Group
3227
       
Tabular List, Table Core Earnings Per Share
Asset Quality Ratio
Non-Bank Revenue (Fee Income)
Core Deposit Growth
Strategic Integration Goal
Relative Total Stockholder Return
Core Return on average Tangible Common Equity
       
Total Shareholder Return Amount $ 135 128 130 124 131
Peer Group Total Shareholder Return Amount 153 143 127 127 137
Net Income (Loss) $ 135,262,000 $ 113,691,000 $ 122,565,000 $ 128,311,000 $ 123,449,000
Company Selected Measure Amount | $ / shares 2.53 2.09 2.27 2.38 2.40
Additional 402(v) Disclosure Based on initial investment of  $100 as of December 31, 2020.        
Measure:: 1          
Pay vs Performance Disclosure          
Name Core Earnings Per Share        
Non-GAAP Measure Description Core Earnings Per Share is the same as adjusted diluted earnings per share, a non-GAAP financial measure. Beginning in 2025, the Company revised its calculation of adjusted net income for all periods presented to include, as applicable, adjustments for net securities gains and losses, realized net gains and losses on the sale of mortgage servicing rights, and non-recurring deferred tax adjustments. Adjusted diluted earnings per share equals (i) the sum of (A) adjusted net income, plus (B) balance sheet repositioning, net securities (gains) losses, initial provision for credit losses, acquisition expenses, restructuring expenses and the tax benefit related to the foregoing, divided by (ii) the weighted average number of common shares outstanding on a diluted basis. For additional information on adjusted diluted earnings per share and a reconciliation to the most directly comparable GAAP financial measure, see the Company’s Annual Report on Form 10‑K for the year ended December 31, 2025 under the heading “Non-GAAP Financial Information.”        
Measure:: 2          
Pay vs Performance Disclosure          
Name Asset Quality Ratio        
Measure:: 3          
Pay vs Performance Disclosure          
Name Non-Bank Revenue (Fee Income)        
Measure:: 4          
Pay vs Performance Disclosure          
Name Core Deposit Growth        
Measure:: 5          
Pay vs Performance Disclosure          
Name Strategic Integration Goal        
Measure:: 6          
Pay vs Performance Disclosure          
Name Relative Total Stockholder Return        
Measure:: 7          
Pay vs Performance Disclosure          
Name Core Return on average Tangible Common Equity        
PEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ (1,939,686)        
PEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 1,972,105        
PEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested, And Dividends Paid on Equity Awards not Otherwise Reflected in Total Compensation [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 108,617        
PEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year, And Dividends Paid on Equity Awards not Otherwise Reflected in Total Compensation [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 66,524        
Non-PEO NEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (571,264)        
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 854,029        
Non-PEO NEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (326,843)        
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested, And Dividends Paid on Equity Awards not Otherwise Reflected in Total Compensation [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 21,553        
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year, And Dividends Paid on Equity Awards not Otherwise Reflected in Total Compensation [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ 12,066