Document And Entity Information [Abstract] Document Type Document Type Document Quarterly Report Document Period End Date Document Period End Date Current Fiscal Year End Date Current Fiscal Year End Date Document Transition Report Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Statement of Financial Position [Abstract] Assets [Abstract] Assets Assets, Current [Abstract] Current Assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Accounts Receivable, Net, Current Accounts receivable Accounts receivable, net of allowances for credit losses of $30 and $0, respectively Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Assets, Current Total current assets Assets, Noncurrent [Abstract] Non-current Assets: Property, Plant and Equipment, Net Property and equipment, net Operating Lease, Right-of-Use Asset Operating lease right-of-use assets Intangible Assets, Net (Excluding Goodwill) Trademarks and other intangibles, net Equity Method Investments Investments in unconsolidated affiliates Other Assets, Noncurrent Other assets Other Assets Total non-current assets Assets Total Assets Liabilities and Equity [Abstract] Liabilities and Stockholders' Equity Liabilities [Abstract] Current Liabilities: Accounts Payable and Accrued Liabilities, Current Accounts payable, accrued expenses and other current liabilities Deferred Revenue, Current Deferred revenue Deferred revenue, current Accrued Income Taxes, Current Accrued income taxes payable Operating Lease, Liability, Current Current portion of operating lease obligations Current portion of lease liabilities Long-term Debt, Current Maturities Current portion of debt Current portion of long-term debt Amount of liability recognized arising from contingent obligations, expected to be settled within one year or the normal operating cycle, if longer. Contingent obligation Liabilities, Current Total current liabilities Liabilities, Noncurrent [Abstract] Long-Term Liabilities: Deferred Revenue, Noncurrent Deferred revenue Deferred revenue, long-term liability Operating Lease, Liability, Noncurrent Non-current portion of lease liabilities Long-term portion of operating lease obligations Long-term Debt, Excluding Current Maturities Long-term debt Long-term debt, net, less current portion Liabilities, Other than Long-term Debt, Noncurrent Other long-term liabilities Liabilities, Noncurrent Total long-term liabilities Liabilities Total Liabilities Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity: Common Stock, Value, Issued Common stock, $.001 par value, 50,000,000 shares authorized, and 4,806,776 and 2,368,072 shares issued and outstanding at September 30, 2025 and December 31, 2024, respectively Additional Paid in Capital, Common Stock Paid-in capital Retained Earnings (Accumulated Deficit) Accumulated deficit Stockholders' Equity Attributable to Parent Total Xcel Brands, Inc. stockholders' equity Stockholders' Equity Attributable to Noncontrolling Interest Noncontrolling interest Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Balances Balances Total Stockholders' Equity Liabilities and Equity Total Liabilities and Stockholders' Equity Accounts Receivable, Allowance for Credit Loss, Current Accounts receivable, net of allowances Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (in dollars per share) Preferred Stock, Shares Authorized Preferred stock, shares authorized (in shares) Preferred Stock, Shares Issued Preferred stock, shares issued (in shares) Preferred Stock, Shares Outstanding Preferred stock, shares outstanding (in shares) Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized (in shares) Common Stock, Shares, Issued Common stock issued Common stock, shares issued (in shares) Common Stock, Shares, Outstanding Purchasable stock Common stock, shares outstanding (in shares) Income Statement [Abstract] Statement [Table] Statement [Table] Product and Service [Axis] Product and Service [Domain] Net licensing revenue Net licensing revenue Net sales Statement [Line Items] Statement [Line Items] Revenues [Abstract] Revenues Revenue from Contract with Customer, Including Assessed Tax Net revenue Licensing revenue Cost of Goods and Services Sold Cost of goods sold Gross Profit Gross profit Costs and Expenses [Abstract] Direct operating costs and expenses Salaries Benefits And Employment Taxes Salaries, benefits and employment taxes Selling, General and Administrative Expense Other selling, general and administrative expenses Costs and Expenses Total direct operating costs and expenses The net result for the period of deducting operating expenses from operating revenues before the inclusion of other expenses. Operating Income Loss Before Other Expense Operating loss before other operating costs and expenses (income) Nonoperating Income (Expense) [Abstract] Other operating costs and expenses (income) Depreciation, Depletion and Amortization Depreciation and amortization expense Depreciation and amortization Asset impairment charges Asset impairment charges The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Loss From Equity Method Investments Loss from equity method investments Gain (Loss) on Disposition of Assets Gain on divestiture of Lori Goldstein Brand Operating Income (Loss) Operating loss Interest and Debt Expense [Abstract] Interest and finance expense (income) Interest Expense Interest expense Interest Expense, Other Other interest and finance charges (income), net Gain (Loss) on Extinguishment of Debt Loss on early extinguishment of debt Loss on early extinguishment of debt Interest and Debt Expense Interest and finance expense (income), net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss before income taxes Income Tax Expense (Benefit) Income tax provision (benefit) Income tax provision (benefit) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Net loss Net loss Net Income (Loss) Attributable to Noncontrolling Interest Net loss attributable to noncontrolling interest Net loss attributable to Xcel Brands, Inc. stockholders Net loss attributable to Xcel Brands, Inc. stockholders Earnings Per Share, Basic [Abstract] Earnings (loss) per common share attributable to Xcel Brands, Inc. stockholders: Earnings Per Share, Basic Basic earnings (loss) per share Basic earnings (loss) per share Earnings Per Share, Diluted Diluted earnings (loss) per share Diluted earnings (loss) per share Earnings Per Share, Diluted [Abstract] Weighted average number of common shares outstanding: Weighted Average Number of Shares Outstanding, Basic Basic weighted average number of shares outstanding Basic weighted average common shares outstanding Weighted Average Number of Shares Outstanding, Diluted Diluted weighted average number of shares outstanding Diluted weighted average common shares outstanding Stockholders' Equity Note, Stock Split, Conversion Ratio Reverse stock split ratio Unaudited Condensed Consolidated Statements of Stockholders' Equity Sale of Stock [Axis] Sale of Stock [Domain] This member represents the public offering and private placement. Public Offering and Private Placement Equity Components [Axis] Equity Component [Domain] Common Stock Common Stock Paid-In Capital [Member] Paid-in Capital Accumulated Deficit [Member] Accumulated Deficit Noncontrolling Interest [Member] Noncontrolling Interest Grantee Status [Axis] Grantee Status [Domain] Employees Represents information pertaining to consultants. Consultants Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Shares, Outstanding Balances (in shares) Balances (in shares) Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Compensation expense related to stock options and restricted stock Amount of increase in additional paid in capital (APIC) resulting from contra revenue related to warrants held by licensee. Adjustments to Additional Paid in Capital, Contra Revenue Related To Warrants Contra-revenue related to warrants held by licensee The amount of shares due to the impact of the fractional shares from a reverse stock split. Stockholders' Equity, Reverse Stock Split, Fractional Shares Impact Additional impact related to fractional shares from reverse stock split Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture Shares issued in connection with stock grant Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture Shares issued in connection with stock grant (in shares) Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Shares issued in connection to restricted stock grants Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Shares issued in connection with restricted stock grants (in shares) Adjustments to Additional Paid in Capital, Warrant Issued Warrants issued in connection with refinancing of term loan debt Value of stock issued as a pro rata portion of base salary. Stock Issued During Period, Pro Rata Of Base Salary, Value Share issued to executives for pro rata portion of base salaries, net of withholding taxes Number of stock issued as a pro rata portion of base salary. Stock Issued During Period, Pro Rata Of Base Salary, Shares Shares issued to executives for pro rata portion of base salaries, net of withholding taxes (in shares) Stock Issued During Period, Value, New Issues Shares issued in connection with public offering and private placement transactions, net of transaction costs Stock Issued During Period, Shares, New Issues Shares issued in connection with public offering and private placement transactions, net of transaction costs (in shares) Shares issued Unaudited Condensed Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Paid-in-Kind Interest Paid in-kind interest expense Amount of amortization expense attributable to debt issuance costs and other non-cash interest expense. Amortization Of Financing Costs And Other Non-cash Interest Expense Amortization of deferred finance costs and other non-cash interest expense Share-based Compensation Stock-based compensation and cost of licensee warrants Provision for Doubtful Accounts Provision for (recovery of) credit losses Income (Loss) from Equity Method Investments Loss from equity method investments Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Inventories Inventory Increase (Decrease) in Prepaid Expenses, Other Prepaid expenses and other current and non-current assets Increase (Decrease) in Deferred Revenue Deferred revenue Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Accounts payable, accrued expenses, accrued income taxes payable, and other current liabilities Increase (Decrease) in Operating Lease Liability Lease-related assets and liabilities Increase (Decrease) in Other Operating Liabilities Other long-term liabilities Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities Payments to Acquire Property, Plant, and Equipment Purchase of property and equipment Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities Proceeds from Issuance or Sale of Equity Proceeds from public offering and private placement transactions, net of transaction costs Proceeds from Issuance of Long-term Debt Proceeds from long-term debt The total of the cash outflow during the period which has been paid to third parties in connection with finance costs. Payment Of Deferred Finance Costs Payment of deferred finance costs Payments for Repurchase of Common Stock Shares repurchased including vested restricted stock in exchange for withholding taxes Repayments of Long-term Debt Payment of long-term debt Payment of long-term debt Net Cash Provided by (Used in) Financing Activities Net cash provided by financing activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net increase (decrease) in cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents, and restricted cash at end of period Cash, cash equivalents, and restricted cash at beginning of period Total cash, cash equivalents, and restricted cash Additional Cash Flow Elements, Summations [Abstract] Reconciliation to amounts on consolidated balance sheets: Amount of cash and cash equivalent restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Included in prepaid expenses and other current assets. Restricted Cash and Cash Equivalents, Prepaid Expenses and Other Current Assets Restricted cash (reported in prepaid expenses and other current assets) Restricted Cash and Cash Equivalents Restricted cash (reported in other non-current assets) Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information: Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid during the period for interest Income Taxes Paid Cash paid during the period for income taxes Nature of Operations, Background, and Basis of Presentation [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Nature of Operations, Background, and Basis of Presentation Investments in Unconsolidated Affiliates and Variable Interest Entities [Abstract] Equity Method Investment Investments in Unconsolidated Affiliates and Variable Interest Entities Trademarks and Other Intangibles [Abstract] Goodwill and Intangible Assets Disclosure [Text Block] Trademarks and Other Intangibles Significant Contracts and Concentrations [Abstract] Collaborative Arrangement Disclosure [Text Block] Significant Contracts and Concentrations Leases [Abstract] Lessee, Operating Leases [Text Block] Leases Debt Disclosure [Abstract] Long-term Debt [Text Block] Debt Stockholders' Equity Note [Abstract] Stockholders' Equity Note Disclosure [Text Block] Stockholders' Equity Earnings Per Share [Abstract] Earnings Per Share [Text Block] Earnings (Loss) Per Share Income Tax Disclosure [Abstract]