CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Net revenue	$ 101,576	$ 127,290	$ 124,780
Operating expenses	61,671	60,223	53,752
Impairment charges	33,109	17,899	340,628
Loss on sale of assets		7,117
Income (loss) from operations	6,796	42,051	(269,600)
Other expense	(2,107)	(693)	(1,984)
Interest expense, net	53,760	55,264	59,000
Loss from continuing operations before income taxes	(49,071)	(13,906)	(330,584)
Benefit from income taxes	(8,695)	(1,944)	(44,423)
Loss from continuing operations	(40,376)	(11,962)	(286,161)
Net loss (income) attributable to noncontrolling interests from continuing operations	6,036	(5,506)	(4,172)
Loss from continuing operations attributable to Sequential Brands Group, Inc. and Subsidiaries	(34,340)	(17,468)	(290,333)
(Loss) income from discontinued operations, net of income taxes	(125,063)	6,984	104,615
Net loss attributable to Sequential Brands Group, Inc. and Subsidiaries	$ (159,403)	$ (10,484)	$ (185,718)
(Loss) earnings per share attributable to Sequential Brands Group, Inc. and Subsidiaries:
Continuing Operations, Loss per share - basic and diluted	$ (0.53)	$ (0.27)	$ (4.62)
Discontinued Operations:
(Loss) earnings per share - basic	(1.93)	0.11	1.66
Discontinued Operations:
(Loss) earnings per share - diluted	(1.93)	0.11	1.66
Weighted-average common shares outstanding:
Earnings Per Share, Basic and Diluted	$ (2.46)	$ (0.16)	$ (2.95)
Basic (in shares)	64,760,823	63,700,081	62,861,743
Diluted (in shares)	64,760,823	64,992,059	63,093,437