Quarterly Summary of Information (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Summarized unaudited quarterly financial data
Net sales	$ 603,852	$ 414,358	$ 154,222	$ 204,851	$ 430,124	$ 277,879	$ 137,059	$ 155,927	$ 1,377,283	$ 1,000,989	$ 813,177
Gross profit	307,752	202,853	65,912	102,478	233,335	130,953	60,743	77,907	678,995	502,938	371,090
Net income attributable to Deckers Outdoor Corporation	$ 124,729	$ 62,484	$ (7,339)	$ 19,178	$ 89,231	$ 42,143	$ 8,966	$ 17,895	$ 199,052	$ 158,235	$ 116,786
Net income per share attributable to Deckers Outdoor Corporation common stockholders:
Basic (in dollars per share)	$ 3.23	$ 1.62	$ (0.19)	$ 0.50	$ 2.31	$ 1.09	$ 0.23	$ 0.46	$ 5.16	$ 4.10	$ 2.99
Diluted (in dollars per share)	$ 3.18	$ 1.59	$ (0.19)	$ 0.49	$ 2.27	$ 1.07	$ 0.23	$ 0.46	$ 5.07	$ 4.03	$ 2.96