Organization & Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Organization & Summary of Significant Accounting Policies [Abstract]
VIE assets - Crocs Gulf	$ 2,500,000	$ 1,400,000
VIE liabilities	200,000
Cash and cash equivalents	294,348,000	257,587,000	145,583,000	77,343,000
Cash and cash equivalents held internationally	272,000,000
Cash and cash equivalents restricted internationally	38,200,000
Reclassification Adjustment		5,400,000	2,900,000
Employer contribution percentage to defined contribution plan	4.00%	4.00%	4.00%
Defined contribution plan expensed for employee match contributions	5,800,000	4,600,000	3,300,000
Advertising, marketing, and promotional expenses	39,800,000	39,800,000	44,100,000
Research and development expenses	12,000,000	10,800,000	7,800,000
Net unrealized losses on unsettled foreign currency transactions	$ (13,928,000)	$ 11,892,000	$ (1,334,000)