Reportable Operating Segments (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2017 USD ($) segment	Jun. 30, 2016 USD ($)	Mar. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	5
Net sales to external customers	$ 209,717	$ 174,393
(Loss) income from operations	(56,256)	(78,319)
Total assets	1,272,858		$ 1,191,780
Unallocated to Segments
Segment Reporting Information [Line Items]
(Loss) income from operations	(53,519)	(53,101)
Reportable segments
Segment Reporting Information [Line Items]
Total assets	695,034		606,058
Reportable segments | UGG brand wholesale
Segment Reporting Information [Line Items]
Net sales to external customers	63,273	45,901
(Loss) income from operations	(1,021)	(10,212)
Total assets	386,400		259,444
Reportable segments | Teva brand wholesale
Segment Reporting Information [Line Items]
Net sales to external customers	32,123	29,525
(Loss) income from operations	4,943	1,862
Total assets	65,732		82,505
Reportable segments | Sanuk brand wholesale
Segment Reporting Information [Line Items]
Net sales to external customers	22,220	22,303
(Loss) income from operations	4,417	4,181
Total assets	73,351		80,102
Reportable segments | Other brands wholesale
Segment Reporting Information [Line Items]
Net sales to external customers	26,965	18,411
(Loss) income from operations	1,026	(1,630)
Total assets	65,564		70,607
Reportable segments | Direct-to-Consumer
Segment Reporting Information [Line Items]
Net sales to external customers	65,136	58,253
(Loss) income from operations	(12,102)	$ (19,419)
Total assets	$ 103,987		$ 113,400