Document and Entity Information - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	May 11, 2018	Sep. 30, 2017
Document and Entity Information
Entity Registrant Name	DECKERS OUTDOOR CORP
Entity Central Index Key	0000910521
Document Type	10-K
Document Period End Date	Mar. 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 2,180,262
Entity Common Stock, Shares Outstanding		30,447,808
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY