v3.26.1
Cover
12 Months Ended
Dec. 31, 2025
Cover [Abstract]  
Document Type 11-K
Document Period End Date Dec. 31, 2025
Amendment Flag false
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
Current Fiscal Year End Date --12-31
Entity Registrant Name WEST BANCORPORATION INC
Entity Central Index Key 0001166928
Document Information [Line Items]  
Document Type 11-K
Entity Registrant Name WEST BANCORPORATION INC
Entity Central Index Key 0001166928
Amendment Flag false
EBP 001  
Cover [Abstract]  
Document Type 11-K
Amendment Flag false
Entity Registrant Name WEST BANCORPORATION INC
Entity Central Index Key 0001166928
EBP, Plan Number 001
Document Information [Line Items]  
EBP, Plan Number 001
Document Type 11-K
Entity Registrant Name WEST BANCORPORATION INC
Entity Central Index Key 0001166928
Amendment Flag false