Quarterly Summary of Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended									12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Mar. 31, 2015	Dec. 31, 2013	Dec. 31, 2012
Summarized unaudited quarterly financial data
Net sales	$ 340,637	$ 784,678	$ 480,273	$ 211,469	$ 294,716	$ 736,048	$ 386,725	$ 170,085	$ 263,760	$ 1,817,057	$ 1,556,618	$ 1,414,398
Gross profit	152,324	415,139	223,873	86,772	144,260	376,200	166,892	69,832	123,559	878,108	736,483	632,154
Net (loss) income	$ 1,406	$ 156,706	$ 40,730	$ (37,062)	$ (2,685)	$ 140,897	$ 33,060	$ (29,275)	$ 1,007	$ 161,780	$ 145,689	$ 128,866
Net income (loss) per share attributable to Deckers Outdoor Corporation common stockholders:
Basic (in dollars per share)	$ 0.04	$ 4.54	$ 1.18	$ (1.07)	$ (0.08)	$ 4.08	$ 0.96	$ (0.85)	$ 0.03	$ 4.70	$ 4.23	$ 3.49
Diluted (in dollars per share)	$ 0.04	$ 4.50	$ 1.17	$ (1.07)	$ (0.08)	$ 4.04	$ 0.95	$ (0.85)	$ 0.03	$ 4.66	$ 4.18	$ 3.45