Document and Entity Information - shares	6 Months Ended
	Sep. 30, 2017	Nov. 03, 2017
Document and Entity Information
Entity Registrant Name	DECKERS OUTDOOR CORP
Entity Central Index Key	0000910521
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		31,961,417
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2