Amount net of taxes of other comprehensive income (loss) unrealized.

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Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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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.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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Accumulated Other Comprehensive Income (Loss) and Reclassifications Adjustments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 27, 2018	Oct. 28, 2017	Oct. 27, 2018	Oct. 28, 2017	Apr. 30, 2018
Accumulated other comprehensive loss
Balance, net of $76 of taxes, as of April 30, 2018			$ (21)
Balance, net of $0 of taxes, as of October 27, 2018	$ 5		5		$ (21)
Other comprehensive income, tax			0		76
Change in foreign currency translation adjustments			0
Unrealized gain, tax portion	0	$ 17	51	$ 19
Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive loss
Balance, net of $76 of taxes, as of April 30, 2018			(21)
Change in foreign currency translation adjustments, net of $0 taxes	(31)		(31)
Unrealized gains, net of $51 of taxes			57
Balance, net of $0 of taxes, as of October 27, 2018	5		5		(21)
Foreign Currency Translation Adjustments
Accumulated other comprehensive loss
Balance, net of $76 of taxes, as of April 30, 2018			36
Change in foreign currency translation adjustments, net of $0 taxes	(31)		(31)
Balance, net of $0 of taxes, as of October 27, 2018	$ 5		5		36
Available-For-Sale Securities.
Accumulated other comprehensive loss
Balance, net of $76 of taxes, as of April 30, 2018			(57)
Unrealized gains, net of $51 of taxes			$ 57
Balance, net of $0 of taxes, as of October 27, 2018					$ (57)