[Line Items] for Income Tax [Table]

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- Definition

Tax Cuts And Jobs Act Of 2017, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense

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- Definition

Amount of deferred tax liability attributable to taxable temporary difference assumed at the acquisition date that are classified as current.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to excess tax benefit for share-based compensation cost.

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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	Apr. 30, 2018	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2019	Jan. 31, 2018	Dec. 29, 2017
Income Tax [Line Items]
Effective income tax rate		23.70%			24.90%
Tax Cuts and Jobs Act of 2017, net tax benefit	$ 1,000	$ 700	$ 2,300
Excess tax benefit related to stock-based compensation				$ 100
RSI Home Products, Inc.
Income Tax [Line Items]
Deferred income taxes						$ 67,542