Represents the number of tanneries to source products to the entity.

No definition available.

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- Definition

Number of Suppliers

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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+ Details

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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- Details

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- Details

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- Details

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- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=deck_LonglivedAssetsMember
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- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
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- Details

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- Details

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- Details

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Concentration of Business (Details) $ in Thousands	12 Months Ended
Concentration of Business (Details) $ in Thousands	Mar. 31, 2018 USD ($) tannery supplier	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)
Concentration Risk [Line Items]
Number of tanneries \| tannery	2
Number of suppliers \| supplier	2
Property and equipment	$ 220,162	$ 225,531
International Net Sales
Concentration Risk [Line Items]
Concentration risk (as a percent)	38.30%	36.20%	35.00%
Sales Revenue, Net \| Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk (as a percent)	23.60%	20.30%
Long-lived Assets
Concentration Risk [Line Items]
Concentration risk (as a percent)	10.00%
Accounts Receivable \| Unidentified Major Customer One
Concentration Risk [Line Items]
Concentration risk (as a percent)		11.20%
Accounts Receivable \| Unidentified Major Customer Two
Concentration Risk [Line Items]
Concentration risk (as a percent)	21.60%
US
Concentration Risk [Line Items]
Property and equipment	$ 203,956	$ 206,077
All other countries
Concentration Risk [Line Items]
Revenue	$ 617,867	$ 539,000	$ 526,000
Concentration risk (as a percent)	32.50%	30.10%	28.10%
Property and equipment	$ 16,206	$ 19,454