v3.26.1
Employee Benefit Plan, Schedule, Asset Held for Investment (Details) - EBP 001 - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Note Receivable from Participant $ 436,295 $ 309,976
EBP, Asset $ 63,128,137  
EBP, Schedule of Asset Held for Investment
Schedule of Assets (Held at End of Year)
December 31, 2025
DescriptionNumber of
Shares/Units or Principal Amount
Current Value
Pooled separate accounts:
*Principal Core Plus Bond Separate Account236 $325,931 
*Principal Government and High Quality Bond Separate Account21,731 633,431 
*Principal Large-Cap Growth I Separate Account52,057 4,282,113 
*Principal Large-Cap S&P 500 Index Separate Account26,690 9,516,437 
*Principal Mid-Cap Value I Separate Account11,614 1,734,837 
*Principal Mid-Cap S&P 400 Index Separate Account8,865 971,216 
*Principal Small-Cap S&P 600 Index Separate Account21,650 2,259,407 
*Principal Small-Cap Value II Separate Account41,507 2,217,241 
*Principal U.S. Property Separate Account171 243,513 
*Collective trust, Principal Stable Value Fund37,353 871,219 
Mutual funds:
ClearBridge International Growth IS Fund28,454 2,109,608 
MFS Value R4 Fund75,632 3,777,080 
DFA Emerging Markets I Fund26,820 995,824 
JanusHenderson Enterprise S Fund19,157 2,515,334 
JanusHenderson Triton N Fund18,919 516,114 
T. Rowe Price Retirement Balanced Fund39,464 552,884 
T. Rowe Price Retirement 2010 Fund3,401 54,415 
T. Rowe Price Retirement 2020 Fund83,740 1,653,036 
T. Rowe Price Retirement 2030 Fund265,503 7,367,704 
T. Rowe Price Retirement 2040 Fund113,881 3,917,515 
T. Rowe Price Retirement 2050 Fund296,530 6,416,915 
T. Rowe Price Retirement 2060 Fund104,681 1,987,891 
T. Rowe Price Retirement 2070 Fund191 2,125 
*Common stock, West Bancorporation, Inc.350,160 7,770,052 
*Notes receivable from participants, 5.25 - 10.50 percent, due through November 2040436,295 
$63,128,137 
* Represents a party-in-interest.
 
Investment, Identifier [Axis]: ClearBridge International Growth IS Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 28,454  
EBP, Asset Held for Investment $ 2,109,608  
Investment, Identifier [Axis]: Collective trust, Principal Stable Value Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 37,353  
EBP, Asset Held for Investment $ 871,219  
Investment, Identifier [Axis]: Common Stock, WTBA    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 350,160  
EBP, Asset Held for Investment $ 7,770,052  
Investment, Identifier [Axis]: DFA Emerging Markets I Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 26,820  
EBP, Asset Held for Investment $ 995,824  
Investment, Identifier [Axis]: JanusHenderson Enterprise S Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 19,157  
EBP, Asset Held for Investment $ 2,515,334  
Investment, Identifier [Axis]: JanusHenderson Triton N Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 18,919  
EBP, Asset Held for Investment $ 516,114  
Investment, Identifier [Axis]: MFS Value R4 Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 75,632  
EBP, Asset Held for Investment $ 3,777,080  
Investment, Identifier [Axis]: Principal Core Plus Bond Separate Account    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 236  
EBP, Asset Held for Investment $ 325,931  
Investment, Identifier [Axis]: Principal Government and High Quality Bond Separate Account    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 21,731  
EBP, Asset Held for Investment $ 633,431  
Investment, Identifier [Axis]: Principal Large-Cap Growth I Separate Account    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 52,057  
EBP, Asset Held for Investment $ 4,282,113  
Investment, Identifier [Axis]: Principal Large-Cap S&P 500 Index Separate Account    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 26,690  
EBP, Asset Held for Investment $ 9,516,437  
Investment, Identifier [Axis]: Principal Mid-Cap S&P 400 Index Separate Account    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 8,865  
EBP, Asset Held for Investment $ 971,216  
Investment, Identifier [Axis]: Principal Mid-Cap Value I Separate Account    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 11,614  
EBP, Asset Held for Investment $ 1,734,837  
Investment, Identifier [Axis]: Principal Small-Cap S&P 600 Index Separate Account    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 21,650  
EBP, Asset Held for Investment $ 2,259,407  
Investment, Identifier [Axis]: Principal Small-Cap Value II Separate Account    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 41,507  
EBP, Asset Held for Investment $ 2,217,241  
Investment, Identifier [Axis]: Principal U.S. Property Separate Account    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 171  
EBP, Asset Held for Investment $ 243,513  
Investment, Identifier [Axis]: T. Rowe Price Retirement 2010 Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 3,401  
EBP, Asset Held for Investment $ 54,415  
Investment, Identifier [Axis]: T. Rowe Price Retirement 2020 Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 83,740  
EBP, Asset Held for Investment $ 1,653,036  
Investment, Identifier [Axis]: T. Rowe Price Retirement 2030 Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 265,503  
EBP, Asset Held for Investment $ 7,367,704  
Investment, Identifier [Axis]: T. Rowe Price Retirement 2040 Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 113,881  
EBP, Asset Held for Investment $ 3,917,515  
Investment, Identifier [Axis]: T. Rowe Price Retirement 2050 Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 296,530  
EBP, Asset Held for Investment $ 6,416,915  
Investment, Identifier [Axis]: T. Rowe Price Retirement 2060 Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 104,681  
EBP, Asset Held for Investment $ 1,987,891  
Investment, Identifier [Axis]: T. Rowe Price Retirement 2070 Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 191  
EBP, Asset Held for Investment $ 2,125  
Investment, Identifier [Axis]: T. Rowe Price Retirement Balanced Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
EBP, Investment, Number of Shares 39,464  
EBP, Asset Held for Investment $ 552,884