Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2019	Mar. 31, 2017
Commitments and Contingencies
Maximum indemnity period of claims related to intellectual property	5 years
Sanuk
Commitments and Contingencies
Approximate amount paid		$ 19,700

Represents the period of indemnity to licensees, distributors and promotional partners in connection with the claims related to use of the company's intellectual property (in years).

No definition available.

Name:	deck_MaximumIndemnityPeriodofClaimsRelatedtoIntellectualProperty
Namespace Prefix:	deck_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration