Restructuring - Schedule of Restructuring by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		20 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0		$ 1,518	$ 2,632
Brand Realignment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	$ 900	1,518	2,632	$ 55,308
Reportable segments | UGG brand wholesale | Brand Realignment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	513	0	574
Reportable segments | Direct-to-Consumer | Brand Realignment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	160	0	1,395
Unallocated to Segments | Brand Realignment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 227	$ 1,518	$ 663