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v3.20.1

General - Narrative (Details) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2020 USD ($) segment | Mar. 31, 2019 USD ($) store | Mar. 31, 2018 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |
Number of reportable segments | segment | 6 |  |
Money market funds | $ 436,241 | $ 372,178 |
Asset retirement obligation | 11,505 | 12,667 |
Asset impairment charges | 1,365 | 180 | $ 2,417
Research and development costs | 27,555 | 23,187 | 22,372
Advertising, marketing, and promotion expense | 144,948 | 118,291 | 111,658
Prepaid advertising, marketing, and promotion expense | $ 2,664 | 6,006 |
Employer matching contribution percentage | 50.00% |  |
Employer matching contribution, percent of employees' gross pay | 6.00% |  |
Defined contribution plan cost | $ 3,251 | $ 3,060 | 2,269
Facility Closing | Fiscal Year 2016 Restructuring Plan |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Number of stores closed | store |  | 46 |
Direct-to-Consumer |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Asset impairment charges | $ 1,365 | $ 180 | $ 2,417
Minimum |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Property, plant and equipment useful life (at least) | 1 year |  |
Customer payment terms | 30 days |  |
Minimum | Cloud Computing Arrangement |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Hosting arrangement useful life | 1 year |  |
Maximum |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Derivative term of contract | 15 months |  |
Customer payment terms | 60 days |  |
Maximum | Cloud Computing Arrangement |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Hosting arrangement useful life | 5 years |  |
Camarillo Distribution Center | Building and Building Improvements |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Liabilities settled, asset retirement obligation | $ (1,828) |  |

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