v3.26.1
DESCRIPTION OF THE PLAN (Details) - National Bank Holdings Corporation Employee Stock Purchase Plan
12 Months Ended
Feb. 28, 2026
USD ($)
shares
Feb. 28, 2025
USD ($)
Feb. 29, 2024
USD ($)
DESCRIPTION OF THE PLAN      
Maximum number of shares authorized to issued under the Plan | shares 400,000    
Number of share available for issuance under the Plan | shares 188,269    
Minimum service period for Plan eligibility (in days) 90 days    
Minimum service hours per week for Plan eligibility (in hours) | $ 20    
Refund from plan due to participant withdrawals | $ $ 94 $ 83 $ 123