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Document and Entity Information (USD $) In Millions, except Share data	9 Months Ended
	Sep. 30, 2011	Jun. 30, 2010	Nov. 01, 2011 Class A	Nov. 01, 2011 Class B
Entity Registrant Name	SKECHERS USA INC
Entity Central Index Key	0001065837
Document Type	10-Q
Document Period End Date	Sep. 30, 2011
Amendment Flag	false
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float		$ 1,322
Entity Common Stock, Shares Outstanding			38,593,996	11,296,970