Fair Value Measurements (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended				12 Months Ended	3 Months Ended
	Mar. 31, 2014 Contingent Consideration Arrangement	Mar. 31, 2014 Sanuk	Dec. 31, 2013 Sanuk	Mar. 31, 2014 Sanuk Contingent Consideration Arrangement	Mar. 31, 2015 Sanuk Contingent Consideration Arrangement Forecast	Mar. 31, 2014 Hoka Contingent Consideration Arrangement
Reconciliation of beginning and ending amounts related to the fair value for contingent consideration for acquisition of business, categorized as Level 3
Balance at the beginning of the period	$ 48,000
Payments	(19,000)
Change in fair value	1,000
Balance at the end of the period	30,000
Contingent consideration
Compound annual growth rate (CAGR) (as a percent)				21.70%
Gross profit range					80,000
Discount rate (as percent)				7.00%
Percentage point change to compound annual growth rate				5.00%
Effect of a five-percentage-point change to total liability				2,000
Contingent consideration arrangement for acquisition of businesses		$ 28,000	$ 46,200			$ 2,000