Exit and Disposal Activity - Summary of Restructuring Credit and Related Charges Associated with Exit and Disposal Activity (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Oct. 28, 2018	Oct. 28, 2018
Restructuring Cost and Reserve [Line Items]
Gain on sale of equipment		$ (1,079)
Upholstery Fabrics [Member]
Restructuring Cost and Reserve [Line Items]
Inventory markdowns		1,565
Employee termination benefits		513
Other operating costs associated with a closed facility		270
Gain on sale of equipment	$ (1,123)	(1,123)
Restructuring credit and related charges		$ 1,225

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

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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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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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