General - Schedule of Restructuring by Segment (Details) - USD ($) $ in Thousands	11 Months Ended	12 Months Ended			38 Months Ended
	Mar. 31, 2016	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 295	$ 1,667	$ 28,984
Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 24,673	295	1,667	28,984	$ 55,619
Reportable segments | UGG brand wholesale | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0	0	2,238	2,238
Reportable segments | Sanuk brand wholesale | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0	0	20	3,068
Reportable segments | Other brands wholesale | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0	0	102	2,263
Reportable segments | Direct-to-Consumer | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0	149	12,771	23,454
Unallocated overhead costs | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 295	$ 1,518	$ 13,853	$ 24,596