Restructuring - Schedule of Restructuring by Segment (Details) - USD ($) $ in Thousands	12 Months Ended			26 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,667	$ 28,984	$ 24,673
Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,667	28,984	24,673	$ 55,324
Reportable segments | UGG brand wholesale | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	2,238	0	2,238
Reportable segments | Sanuk brand wholesale | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	20	3,048	3,068
Reportable segments | Other brands wholesale | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	102	2,161	2,263
Reportable segments | Direct-to-Consumer | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	149	12,771	10,534	23,454
Unallocated overhead costs | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,518	$ 13,853	$ 8,930	$ 24,301