Document and Entity Information [Abstract] Document Information [Table] Legal Entity [Axis] All Entities [Member] Represents the Retirement Plan number EBP 001. E B P 001 [Member] National Bank Holdings Corporation Employee Stock Purchase Plan Document Information [Line Items] Document Type Document Period End Date Entity Registrant Name Entity Central Index Key Amendment Flag Statements of Financial Condition EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] Statements of Financial Condition EBP, Asset [Abstract] ASSETS EBP, Receivable Receivable from National Bank Holdings Corporation Represents the Equity Abstract. EBP, Equity Abstract [Abstract] PLAN EQUITY EBP, Net Asset Available for Benefit Plan equity at end of year Plan equity at beginning of year Plan equity Statements of Income and Changes in Plan Equity EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] Statements of Income and Changes in Plan Equity EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution Participant contributions EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Purchases of National Bank Holdings Class A Common Stock DESCRIPTION OF THE PLAN EBP, Description of Plan [Table] EBP, Description of Plan [Line Items] DESCRIPTION OF THE PLAN EBP, Description of Plan [Text Block] DESCRIPTION OF THE PLAN SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES EBP, Accounting Policy [Table] EBP, Accounting Policy [Line Items] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES EBP, Summary of Accounting Policy [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES FEDERAL INCOME TAX STATUS EBP, Tax Status [Table] EBP, Tax Status [Line Items] FEDERAL INCOME TAX STATUS EBP, Tax Status [Text Block] FEDERAL INCOME TAX STATUS Tabular disclosure of shares purchased and purchase price under stock purchase provisions. E B P, Stock Purchase Provisions, Shares Purchased And Purchase Price [Table Text Block] Schedule of shares purchased and purchase price under stock purchase provisions Maximum number of shares that may be issued under the Employee Benefit Plan. Employee Benefit Plan, Maximum Shares Authorized To Issue Maximum number of shares authorized to issued under the Plan Number of shares available for issuance under the Plan. Employee Benefit Plan, Number Of Shares Available For Issuance Number of share available for issuance under the Plan Represents the minimum service period for plan eligibility under (employee benefit plan (EBP)). Employee Benefit Plan, Minimum Service Period For Plan Eligibility Minimum service period for Plan eligibility (in days) Represents the minimum hours period per week for plan eligibility under (employee benefit plan (EBP)). Employee Benefit Plan, Minimum Service Hours Per Week For Plan Eligibility Minimum service hours per week for Plan eligibility (in hours) Represents the amount of participant contributions refunded by the plan during the reporting period due to withdrawals, contribution limits, or other planspecific provisions. These refunds reduce net assets available for benefits. Employee Benefit Plan, Refunds Of Participant Contributions On Withdrawal Refund from plan due to participant withdrawals Scenario [Axis] Scenario [Domain] Represent the information pertaining to offering period being March to August month of the fiscal year. Offering Period, March To August [Member] March - August of FY (Offering Period) Represent the information pertaining to offering period being September to February month of the fiscal year. Offering Period, September To February [Member] September - February of FY (Offering Period) Represents the percentage of fair market value used to determine the purchase price of employer stock under the employee stock purchase plan. Employee Benefit Plan, Stock Purchase Price Percentage Of Fair Value Stock purchase price per share (% of FMV of company's common stock) EBP, Investment, Purchased, Number of Shares Shares purchased Represents the purchase price per share of shares purchased by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Employee Benefit Plan, Investment, Purchased, Price Per Share Purchase price