EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum Maximum [Member] EBP, Forfeited Nonvested Account, Decrease from Administrative Expense EBP, Forfeited Nonvested Account, Decrease from Administrative Expense Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Mutual Fund Mutual Fund [Member] Document Fiscal Year Focus Document Fiscal Year Focus EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage EBP, Change in Net Asset Available for Benefit, Decrease EBP, Change in Net Asset Available for Benefit, Decrease EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Text Block] EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount EBP, Direct Payment to Third Party Administrator Not Covered by Revenue Sharing EBP, Direct Payment to Third Party Administrator Not Covered by Revenue Sharing EBP, Direct Payment to Third Party Administrator Not Covered by Revenue Sharing EBP, Investment at Fair Value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] EBP, Investment, Fair Value and NAV [Abstract] EBP, Asset EBP, Asset Statistical Measurement [Axis] Statistical Measurement [Axis] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Payment to Participant EBP, Payment to Participant [Policy Text Block] EBP, Fair Value, Investment, NAV, Unfunded Commitment EBP, Fair Value, Investment, NAV, Unfunded Commitment Amendment Flag Amendment Flag EBP, Basis of Accounting EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] EBP, Investment, Number of Shares EBP, Investment, Number of Shares EBP, Description of Plan and Accounting Change [Abstract] EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Table Text Block] Common Stock Common Stock [Member] Investments [Domain] Investments [Domain] EBP, Use of Estimate EBP, Use of Estimate [Policy Text Block] Pooled Separate Account EBP, Pooled Separate Account [Member] EBP, Schedule of Asset Held for Investment EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] Employee Benefit Plan, Comprehensive Text Block (Tables) [Table] Employee Benefit Plan, Comprehensive Text Block (Tables) [Table] Employee Benefit Plan, Comprehensive Text Block (Tables) [Table] EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant EBP, Change in Net Asset Available for Benefit, Increase from Contribution EBP, Change in Net Asset Available for Benefit, Increase from Contribution EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] EBP, Employer Discretionary Contribution, Amount EBP, Employer Discretionary Contribution, Amount EBP, Employer Discretionary Contribution, Amount EBP, Plan Number EBP, Plan Number EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] EBP, Description of Plan EBP, Description of Plan [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] EBP, Change in Net Asset Available for Benefit, Increase EBP, Change in Net Asset Available for Benefit, Increase Investment, Identifier [Axis] Investment, Identifier [Axis] EBP, Asset Held for Investment EBP, Asset Held for Investment Current Fiscal Year End Date Current Fiscal Year End Date EBP, Risk and Uncertainty EBP, Risk and Uncertainty [Policy Text Block] Document Information [Line Items] Document Information [Line Items] Small/Mid-Size U.S. Equity Defined Benefit Plan, Equity Securities, US, Small or Mid Cap [Member] Security representing ownership in corporation or other legal entity, domiciled in United States of America (US), classified as having small or medium market capitalization, for which ownership is represented by share of stock; in which defined benefit plan asset is invested. Includes, but is not limited to, common stock, preferred stock, convertible security, stock right and stock warrant. EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] EBP, Tax Status [Table] EBP, Tax Status [Table] EBP, Change in Net Asset Available for Benefit, Increase (Decrease) EBP, Change in Net Asset Available for Benefit, Increase (Decrease) EBP, Related Party and Party-in-Interest Transactions EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] EBP, Receivable EBP, Receivable Text Block [Abstract] EBP, Employer Contribution, Receivable EBP, Employer Contribution, Receivable EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Unrealized Gain (Loss) on Investment EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Unrealized Gain (Loss) on Investment EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Defined Contribution Plan, Employer Discretionary Contribution percent EBP, Employer Discretionary Contribution percent EBP, Employer Discretionary Contribution, percent of salaries Employee Benefit Plan, Employer Contribution, Matching Amount EBP, Employer Contribution, Matching Amount Amount of employer matching contribution on eligible participant contribution to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Employee Benefit Plan, Comprehensive Text Block (Tables) [Line Items] Employee Benefit Plan, Comprehensive Text Block (Tables) [Line Items] Employee Benefit Plan, Comprehensive Text Block (Tables) [Line Items] EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] EBP, Tax Status [Abstract] EBP, Plan Assets Invested in Company Common Stock, Percent EBP, Investment, Plan Assets Invested in Company Common Stock, Percent EBP, Investment, Plan Assets Invested in Company Common Stock, Percent Document Period End Date Document Period End Date EBP, Expense EBP, Expense [Policy Text Block] EBP, Investment EBP, Investment [Policy Text Block] Fair Value, Inputs, Level 1, Level 2, and Level 3 Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Document Type Document Type EBP, Plan Termination EBP, Plan Termination [Text Block] Entity Central Index Key Entity Central Index Key EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Asset Held for Investment, Participant Loan, Interest Rate Collective Investment Trust Common Collective Trust [Member] Pooled Separate Account, Real Estate Employee Benefit Plan, Pooled Separate Account, Real Estate [Member] Separate real estate account in which employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) participates. EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] EBP, Change in Net Asset Available for Benefit, Other Decrease EBP, Change in Net Asset Available for Benefit, Other Decrease EBP, Change in Net Asset Available for Benefit, Other Decrease EBP, Note Receivable from Participant EBP, Note Receivable from Participant Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] EBP, Payment of Benefit, Lump Sum Payout Requirement Maximum EBP, Payment of Benefit, Lump Sum Payout Requirement Maximum The maximum amount of vested account benefit balance which is required to be paid out in a lump sum EBP, Summary of Accounting Policy EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name Document Fiscal Period Focus Document Fiscal Period Focus EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Cost EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Cost EBP 001 EBP 001 [Member] EBP 001 EBP, Tax Status EBP, Tax Status [Text Block] EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage EBP, Minimum Amount of Vested Benefits For Installment Payments EBP, Minimum Amount of Vested Benefits For Installment Payments The minimum vested balance required where a participant may elect to receive the benefit as a lump sum or in installment payments Document Information [Table] Document Information [Table] EBP, Note Receivable from Participant EBP, Note Receivable from Participant [Policy Text Block] EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment West Bancorporation Inc. Common Stock West Bancorporation Inc. Common Stock [Member] West Bancorporation Inc. Common Stock EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Large U.S, Equity Defined Benefit Plan, Equity Securities, US, Large Cap [Member] EBP, Net Asset Available for Benefit EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] EBP, Employer Contribution, Matching Percentage EBP, Employer Contribution, Matching Percentage Fixed Income Investments Fixed Income Investments [Member] Fair Value Measured at Net Asset Value Per Share Fair Value Measured at Net Asset Value Per Share [Member] EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]