CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net revenue	$ 26,415	$ 33,126	$ 51,939	$ 62,589
Operating expenses	13,907	13,428	29,453	26,719
Loss on sale of assets		1,975		7,117
Income from operations	12,508	17,723	22,486	28,753
Other expense (income)	(829)	(31)	(427)	104
Interest expense, net	13,893	13,950	27,746	27,747
(Loss) income from continuing operations before income taxes	(2,214)	3,742	(5,687)	1,110
(Benefit from) provision for income taxes	(379)	441	(620)	(544)
Net (loss) income from continuing operations	(1,835)	3,301	(5,067)	1,654
Net income attributable to noncontrolling interests from continuing operations	1,455	1,102	2,994	3,062
Net (loss) income from continuing operations attributable to Sequential Brands Group, Inc. and Subsidiaries	(3,290)	2,199	(8,061)	(1,408)
(Loss) income from discontinued operations, net of income taxes	(1,309)	1,388	(121,883)	2,731
Net loss attributable to Sequential Brands Group, Inc. and Subsidiaries	$ (4,599)	$ 3,587	$ (129,944)	$ 1,323
(Loss) earnings per share - basic:
Continuing operations	$ (0.05)	$ 0.03	$ (0.13)	$ (0.02)
Discontinued operations	(0.02)	0.02	(1.89)	0.04
(Loss) earnings per share - diluted:
Continuing operations	(0.05)	0.03	(0.13)	(0.02)
Discontinued operations	(0.02)	0.02	(1.89)	0.04
(Loss) earnings per share attributable to Sequential Brands Group, Inc. and Subsidiaries:
Basic	(0.07)	0.06	(2.02)	0.02
Diluted	$ (0.07)	$ 0.06	$ (2.02)	$ 0.02
Weighted-average common shares outstanding:
Basic (in shares)	64,685,188	63,583,280	64,454,718	63,408,679
Diluted (in shares)	64,685,188	64,029,972	64,454,718	64,329,308