Business Segments, Concentration of Business, and Credit Risk and Significant Customers (Details 3) (USD $) In Thousands, unless otherwise specified						12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2012 UGG wholesale item	Dec. 31, 2012 International Net Sales	Dec. 31, 2011 International Net Sales	Dec. 31, 2010 International Net Sales	Dec. 31, 2012 Net Trade Accounts Receivable Customer One customer	Dec. 31, 2011 Net Trade Accounts Receivable Customer One customer	Dec. 31, 2012 Long-lived assets Minimum	Dec. 31, 2011 Long-lived assets Minimum	Dec. 31, 2012 Net sales Minimum	Dec. 31, 2011 Net sales Minimum	Dec. 31, 2010 Net sales Minimum	Dec. 31, 2010 Net sales Customer One customer	Dec. 31, 2012 US Long-lived assets	Dec. 31, 2011 US Long-lived assets	Dec. 31, 2012 All other countries Long-lived assets	Dec. 31, 2011 All other countries Long-lived assets
Cash and cash equivalents
Money market fund accounts	$ 52,650	$ 196,315
Cash	57,597	67,291
Total cash and cash equivalents	110,247	263,606	445,226	315,862
Long-lived assets, which consist of property and equipment, by major country
Property and equipment, by major country	$ 125,370	$ 90,257															$ 89,423	$ 65,034	$ 35,947	$ 25,223
Concentration risks
Number of customers considered concentration risk									1	1						1
Concentration risk (as a percent)									18.80%	17.10%	10.00%	10.00%	10.00%	10.00%	10.00%	11.90%
Concentration risk benchmark (as a percent)						31.20%	31.40%	23.70%
Number of tanneries used to source products					2