Quarterly Summary of Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Summarized unaudited quarterly financial data
Net sales	$ 369,465	$ 760,345	$ 485,944	$ 174,393	$ 378,635	$ 795,902	$ 486,855	$ 213,805	$ 1,790,147	$ 1,875,197	$ 1,817,057
Gross profit	158,924	383,634	216,425	76,252	154,942	391,017	214,113	86,596	835,235	846,668	878,108
(Loss) income from operations	(30,873)	53,250	54,023	(78,319)	(27,878)	202,500	51,213	(63,708)	$ (1,919)	$ 162,127	$ 224,419
Net (loss) income	$ (15,704)	$ 41,027	$ 39,305	$ (58,918)	$ (23,706)	$ 156,921	$ 36,377	$ (47,327)
Net income per share:
Basic (in dollars per share)	$ (0.49)	$ 1.28	$ 1.23	$ (1.84)	$ (0.73)	$ 4.85	$ 1.12	$ (1.43)	$ 0.18	$ 3.76	$ 4.70
Diluted (in dollars per share)	$ (0.49)	$ 1.27	$ 1.21	$ (1.84)	$ (0.73)	$ 4.78	$ 1.11	$ (1.43)	$ 0.18	$ 3.70	$ 4.66
Condensed Financial Statements, Captions [Line Items]
Restructuring costs									$ 29,087	$ 24,856	$ 0
Impairment of goodwill									113,944	0	$ 0
Brand Realignment
Condensed Financial Statements, Captions [Line Items]
Restructuring costs									$ 29,100	$ 24,800
Sanuk brand wholesale
Condensed Financial Statements, Captions [Line Items]
Impairment of goodwill		$ (113,944)
Patents | Sanuk brand wholesale
Condensed Financial Statements, Captions [Line Items]
Impairment of intangible assets (excluding goodwill)		$ 4,086