CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2015	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net sales	$ 294,716	$ 1,817,057	$ 1,556,618	$ 1,414,398
Cost of sales	150,456	938,949	820,135	782,244
Gross profit	144,260	878,108	736,483	632,154
Selling, general and administrative (SG&A) expenses	144,668	653,689	528,586	445,206
Income (loss) from operations	(408)	224,419	207,897	186,948
Other expense (income), net:
Interest income	(65)	(207)	(60)	(217)
Interest expense	516	4,220	3,079	3,840
Other, net	(117)	(733)	(679)	(793)
Total other expense, net	334	3,280	2,340	2,830
Income (loss) before income taxes	(742)	221,139	205,557	184,118
Income taxes	1,943	59,359	59,868	55,104
Net income (loss)	(2,685)	161,780	145,689	129,014
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on foreign currency hedging	(273)	450	(486)	(633)
Foreign currency translation adjustment	873	(18,875)	(757)	963
Total other comprehensive (loss) income	600	(18,425)	(1,243)	330
Comprehensive income (loss)	(2,085)	143,355	144,446	129,344
Net income (loss) attributable to:
Deckers Outdoor Corporation	(2,685)	161,780	145,689	128,866
Noncontrolling interest	0	0	0	148
Net income (loss)	(2,685)	161,780	145,689	129,014
Comprehensive income (loss) attributable to:
Deckers Outdoor Corporation	(2,085)	143,355	144,446	129,196
Noncontrolling interest	0	0	0	148
Comprehensive income (loss)	$ (2,085)	$ 143,355	$ 144,446	$ 129,344
Net income (loss) per share attributable to Deckers Outdoor Corporation common stockholders:
Basic (in dollars per share)	$ (0.08)	$ 4.70	$ 4.23	$ 3.49
Diluted (in dollars per share)	$ (0.08)	$ 4.66	$ 4.18	$ 3.45
Weighted-average common shares outstanding:
Basic (in shares)	34,621	34,433	34,473	36,879
Diluted (in shares)	34,621	34,733	34,829	37,334