CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Net revenue	$ 25,392	$ 29,455	$ 77,331	$ 92,044
Operating expenses	12,247	15,414	41,700	41,979
Impairment charges	33,109	17,899	33,109	17,899
Loss on sale of assets				7,117
(Loss) income from operations	(19,964)	(3,858)	2,522	25,049
Other expense (income)	(843)	31	(1,270)	135
Interest expense, net	13,048	13,862	40,794	41,609
(Loss) income from continuing operations before income taxes	(33,855)	(17,689)	(39,542)	(16,425)
Benefit for income taxes	(6,035)	(8,808)	(6,655)	(9,289)
Loss from continuing operations	(27,820)	(8,881)	(32,887)	(7,136)
Net loss (income) attributable to noncontrolling interests from continuing operations	9,449	(1,581)	6,455	(4,643)
Loss from continuing operations attributable to Sequential Brands Group, Inc. and Subsidiaries	(18,371)	(10,462)	(26,432)	(11,779)
(Loss) income from discontinued operations, net of income taxes	(309)	847	(122,192)	3,487
Net loss attributable to Sequential Brands Group, Inc. and Subsidiaries	$ (18,680)	$ (9,615)	$ (148,624)	$ (8,292)
(Loss) earnings per share - basic:
Continuing operations	$ (0.28)	$ (0.16)	$ (0.41)	$ (0.19)
Discontinued operations	0.00	0.01	(1.89)	0.05
(Loss) earnings per share - diluted:
Discontinued operations	0.00	0.01	(1.89)	0.05
(Loss) earnings per share attributable to Sequential Brands Group, Inc. and Subsidiaries:
Basic and diluted (in dollars per share)	$ (0.29)	$ (0.15)	$ (2.30)	$ (0.13)
Weighted-average common shares outstanding:
Basic (in shares)	64,952,093	63,911,481	64,622,332	63,578,121
Diluted (in shares)	64,952,093	64,270,995	64,622,332	64,622,891