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Related Party Transactions (Details)			12 Months Ended
Related Party Transactions (Details)	Feb. 24, 2020 USD ($) item	Feb. 11, 2019 USD ($) shares	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Asset Purchase Agreement
Net revenue			$ 29,448,000	$ 41,727,000
Net sales revenue
Asset Purchase Agreement
Net revenue			9,193,000	15,292,000
Hilco Trading, LLC [Member]
Asset Purchase Agreement
Professional Fees			$ 50,000
Hilco Trading, LLC [Member] \| XCel Brands, Inc. [Member]
Asset Purchase Agreement
Ownership percentage			5.00%
Halston Heritage
Asset Purchase Agreement
Cash included in aggregate purchase price		$ 8,350,000
Common stock included in aggregate purchase price (in shares) \| shares		777,778
Issuance of common stock in connection with Halston Heritage assets acquisition		$ 1,058,000
Contingent consideration		6,000,000
Minimum deduction from net royalties		$ 1,500,000
Maximum percentage of issued/issuable of earn-out shares		4.99%
Halston Heritage \| 50% of the first $10,000,000 of Excess Net Royalties
Asset Purchase Agreement
Applicable percentage		50.00%
Halston Heritage \| 20% of aggregate Excess Net Royalties greater than $10,000,000 and up to $15,000,000
Asset Purchase Agreement
Applicable percentage		20.00%
Halston Heritage \| 0% of aggregate Excess Net Royalties in excess of $15,000,000
Asset Purchase Agreement
Applicable percentage		0.00%
Maximum \| Halston Heritage \| 50% of the first $10,000,000 of Excess Net Royalties
Asset Purchase Agreement
Excess net royalties		$ 10,000,000
Maximum \| Halston Heritage \| 20% of aggregate Excess Net Royalties greater than $10,000,000 and up to $15,000,000
Asset Purchase Agreement
Excess net royalties		15,000,000
Minimum \| Halston Heritage \| 20% of aggregate Excess Net Royalties greater than $10,000,000 and up to $15,000,000
Asset Purchase Agreement
Excess net royalties		10,000,000
Minimum \| Halston Heritage \| 0% of aggregate Excess Net Royalties in excess of $15,000,000
Asset Purchase Agreement
Excess net royalties		$ 15,000,000
Wife Of Robert W. D'Loren
Asset Purchase Agreement
Period for which the related party has worked in company's ERP system			2 years
Compensation			$ 140,000	$ 170,000
Hilco Trading, LLC [Member] \| Net sales revenue
Asset Purchase Agreement
Net revenue			$ 150,000
Hilco Trading, LLC [Member] \| Hilco Global [Member] \| Longaberger Licensing, LLC
Asset Purchase Agreement
Ownership percentage			50.00%
Isaac Mizrahis [Member]
Asset Purchase Agreement
Extension term	2 years
Initial cash bonus basis for Calculation	$ 2,500,000
Subsequent cash bonus basis for Calculation	$ 3,000,000
DRT Bonus	10.00%
Bricks-and-Mortar Bonus	10.00%
Endorsement Bonus	40.00%
Monday bonus per appearance	$ 10,000
Maximum appearances eligible for Monday bonus \| item	40
Termination compensation period	2 years
Period of restriction of doing similar activity post termination	1 year
Maximum ownership interest in investment	3.00%
Period of restriction for solicit business relations post termination.	1 year
2020	$ 1,800,000
2021	2,000,000
2022	2,100,000
2023	2,250,000
2024	2,400,000
Isaac Mizrahis [Member] \| Laugh Club [Member]
Asset Purchase Agreement
Annual fee	$ 720,000
House Of Halston LLC \| Former Director
Asset Purchase Agreement
Ownership Percentage in HOH			25.00%