Business Segments (Wholesale Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Mar. 31, 2016
Business segment information
Net sales to external customers	$ 485,944	$ 486,855	$ 660,337	$ 700,660
Income (loss) from operations	54,023	51,213	(24,296)	(12,495)
Total assets for reportable segments	1,572,601		1,572,601		$ 1,278,068
Reportable segments
Business segment information
Total assets for reportable segments	1,172,137		1,172,137		762,783
UGG wholesale
Business segment information
Net sales to external customers	337,852	344,659	383,753	411,081
Income (loss) from operations	112,510	116,794	102,298	113,414
Total assets for reportable segments	731,318		731,318		248,937
Teva wholesale
Business segment information
Net sales to external customers	12,246	14,103	41,771	51,169
Income (loss) from operations	(2,121)	(442)	(259)	5,432
Total assets for reportable segments	45,186		45,186		87,225
Sanuk wholesale
Business segment information
Net sales to external customers	15,030	13,324	37,333	41,837
Income (loss) from operations	(211)	(23)	3,970	5,325
Total assets for reportable segments	188,538		188,538		212,816
Other brands wholesale
Business segment information
Net sales to external customers	34,830	28,153	53,241	49,538
Income (loss) from operations	2,362	283	732	(3,717)
Total assets for reportable segments	67,742		67,742		65,072
Direct-to-Consumer
Business segment information
Net sales to external customers	85,986	86,616	144,239	147,035
Income (loss) from operations	(6,092)	(9,607)	(25,511)	(24,812)
Total assets for reportable segments	139,353		139,353		$ 148,733
Unallocated to segments
Business segment information
Income (loss) from operations	$ (52,425)	$ (55,792)	$ (105,526)	$ (108,137)