General - Schedule of Restructuring by Segment (Details) - USD ($) $ in Thousands	6 Months Ended		32 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 295	$ 1,518
Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 295		$ 55,619
Reportable segments | UGG brand wholesale | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			2,238
Reportable segments | Sanuk brand wholesale | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			3,068
Reportable segments | Other brands wholesale | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			2,263
Reportable segments | Direct-to-Consumer | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			23,454
Unallocated overhead costs | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 24,596