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Stock Compensation Plans Narratives (Details) - Common stock [Member] - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Restricted stock units (RSUs) [Member] |  |  |
Stock compensation plan [Line Items] |  |  |
Restricted stock unit employee expense | $ 0 |  |
Shares of common stock per restricted stock unit | 1 |  |
Stock compensation plan, restricted stock units, vested in period, fair value | $ 3,274 | $ 2,916 | $ 2,509
Stock compensation expense | 2,744 | 2,509 | 3,111
Stock compensation plan, tax benefit from vesting of restricted stock units | 85 | $ 2 |
Stock compensation plan, tax expense from vesting of restricted stock units |  |  | $ 5
Stock compensation plan, restricted stock units, nonvested awards, compensation not yet recognized | $ 3,473 |  |
Stock compensation plan, restricted stock units, outstanding, weighted average remaining contractual terms | 1 year 4 months 24 days |  |
West Bancorporation, Inc. 2021 Equity Incentive Plan |  |  |
Stock compensation plan [Line Items] |  |  |
Stock compensation plan, restricted stock units, number of shares authorized | 1,175,000 |  |
Stock compensation plan, restricted stock units, number of shares available for grant | 515,311 |  |

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