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Summary of Significant Accounting Policies - Goodwill and Indefinite Lived Intangible Assets (Details) $ in Thousands | 12 Months Ended
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Mar. 28, 2020 USD ($) store segment | Mar. 30, 2019 USD ($) store | Mar. 31, 2018 USD ($) store
Goodwill and Indefinite-Lived Intangible Assets |  |  |
Number of reporting units | segment | 2 |  |
Goodwill impairment | $ 0 | $ 0 | $ 0
Impairment of indefinite-lived intangible assets, excluding goodwill | 0 | 0 | 0
Long-Lived Assets |  |  |
Impairments of long lived assets | $ 191 | $ 455 | $ 83
Number of stores with asset impairment | store | 1 | 3 | 2
Customer lists |  |  |
Definite-Lived Intangible Assets |  |  |
Useful life | 5 years |  |
Trademarks |  |  |
Definite-Lived Intangible Assets |  |  |
Useful life | 3 years |  |

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266 + Details
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