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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