Goodwill and Intangible Assets - Components of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
Mar. 30, 2019	Mar. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 61,955	$ 10,007
Accumulated amortization	(13,019)	(8,465)
Amortizable intangibles, net	$ 48,936	$ 1,542
Amortization period for useful lives of intangible assets	8 years	5 years 4 months 24 days
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 48,782	$ 5,739
Accumulated amortization	(9,052)	(5,610)
Amortizable intangibles, net	$ 39,730	$ 129
Amortization period for useful lives of intangible assets	8 years 2 months 12 days	4 years 3 months 18 days
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 13,173	$ 4,268
Accumulated amortization	(3,967)	(2,855)
Amortizable intangibles, net	$ 9,206	$ 1,413
Amortization period for useful lives of intangible assets	7 years 1 month 6 days	5 years 6 months

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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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.

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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