Reportable Operating Segments (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2018 USD ($) segment	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment									5
Net sales to external customers	$ 400,684	$ 810,478	$ 482,460	$ 209,717	$ 369,465	$ 760,345	$ 485,944	$ 174,393	$ 1,903,339	$ 1,790,147	$ 1,875,197
(Loss) income from operations	18,294	$ 193,191	$ 67,355	$ (56,256)	(30,873)	$ 53,250	$ 54,023	$ (78,319)	222,584	(1,919)	162,127
Depreciation, amortization and accretion									48,572	52,628	50,024
Capital expenditures									34,813	44,499	66,186
Total assets	1,264,379				1,191,780				$ 1,264,379	1,191,780
Direct-to-Consumer
Segment Reporting Information [Line Items]
Number of reportable segments | segment									1
Reportable segments
Segment Reporting Information [Line Items]
Total assets	582,360				606,058				$ 582,360	606,058
Reportable segments | UGG brand wholesale
Segment Reporting Information [Line Items]
Net sales to external customers									841,893	826,355	918,102
(Loss) income from operations									247,826	213,407	246,990
Depreciation, amortization and accretion									3,193	3,167	2,254
Capital expenditures									58	3,444	1,458
Total assets	229,894				259,444				229,894	259,444
Reportable segments | Teva brand wholesale
Segment Reporting Information [Line Items]
Net sales to external customers									117,478	103,694	121,239
(Loss) income from operations									20,400	10,045	17,692
Depreciation, amortization and accretion									12	24	54
Capital expenditures									0	0	0
Total assets	85,980				82,505				85,980	82,505
Reportable segments | Sanuk brand wholesale
Segment Reporting Information [Line Items]
Net sales to external customers									78,283	77,552	90,719
(Loss) income from operations									14,474	(110,582)	15,565
Depreciation, amortization and accretion									4,174	5,018	6,556
Capital expenditures									20	0	881
Total assets	79,322				80,102				79,322	80,102
Reportable segments | Other brands wholesale
Segment Reporting Information [Line Items]
Net sales to external customers									149,961	116,206	100,820
(Loss) income from operations									22,258	1,571	(4,384)
Depreciation, amortization and accretion									865	971	1,101
Capital expenditures									0	191	51
Total assets	74,809				70,607				74,809	70,607
Reportable segments | Direct-to-Consumer
Segment Reporting Information [Line Items]
Net sales to external customers									715,724	666,340	644,317
(Loss) income from operations									156,896	109,802	101,756
Depreciation, amortization and accretion									13,396	15,669	19,030
Capital expenditures									8,641	15,277	18,445
Total assets	$ 112,355				$ 113,400				112,355	113,400
Unallocated overhead costs
Segment Reporting Information [Line Items]
(Loss) income from operations									(239,270)	(226,162)	(215,492)
Depreciation, amortization and accretion									26,932	27,779	21,029
Capital expenditures									$ 26,094	$ 25,587	$ 45,351