Business Segments (Wholesale Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2015
Business segment information
Net sales to external customers	$ 486,855	$ 480,273	$ 700,660	$ 691,742
Income (loss) from operations	51,213	59,583	(12,495)	9,101
Total assets for reportable segments	1,572,666		1,572,666		$ 1,169,933
Reportable segments
Business segment information
Total assets for reportable segments	1,200,207		1,200,207		698,174
UGG wholesale
Business segment information
Net sales to external customers	344,659	339,799	411,081	413,992
Income (loss) from operations	116,794	123,029	113,414	125,722
Total assets for reportable segments	728,931		728,931		194,720
Teva wholesale
Business segment information
Net sales to external customers	14,103	17,603	51,169	53,268
Income (loss) from operations	(442)	(310)	5,432	4,472
Total assets for reportable segments	46,483		46,483		77,423
Sanuk wholesale
Business segment information
Net sales to external customers	13,324	15,955	41,837	48,284
Income (loss) from operations	(23)	2,684	5,325	9,589
Total assets for reportable segments	194,238		194,238		224,974
Other wholesale
Business segment information
Net sales to external customers	28,153	22,117	49,538	33,942
Income (loss) from operations	283	(571)	(3,717)	(4,582)
Total assets for reportable segments	55,457		55,457		53,634
Direct-to-Consumer
Business segment information
Net sales to external customers	86,616	84,799	147,035	142,256
Income (loss) from operations	(9,607)	968	(24,812)	(14,074)
Total assets for reportable segments	175,098		175,098		$ 147,423
Unallocated to Segments
Business segment information
Income (loss) from operations	$ (55,792)	$ (66,217)	$ (108,137)	$ (112,026)