Inventories - Additional Information (Detail) - USD ($) $ in Millions	Sep. 28, 2019	Mar. 30, 2019
Inventory Disclosure [Abstract]
Reserves for obsolete inventory	$ 4.0	$ 4.1

Amount of valuation reserve for inventory.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Name:	us-gaap_InventoryValuationReserves
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant