Summary of Significant Accounting Policies (Policy)	12 Months Ended
Summary of Significant Accounting Policies (Policy)	Apr. 30, 2019
Accounting Policies [Abstract]
Principles of Consolidation and Basis of Presentation	Principles of Consolidation and Basis of Presentation: The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. Intercompany accounts and transactions have been eliminated in consolidation.
Revenue Recognition	Revenue Recognition: Our principal performance obligations are the sale of kitchen, bath and home organization products. The Company recognizes revenue as control of our products is transferred to our customers, which is at the time of shipment or upon delivery based on the contractual terms with our customers.
Cost of Sales and Distribution	Cost of Sales and Distribution: Cost of sales and distribution includes all costs associated with the manufacture and distribution of the Company’s products including the costs of shipping and handling.
Advertising Costs	Advertising Costs: Advertising costs are expensed as incurred.
Cash and Cash Equivalents and Investments in Certificates of Deposit	Cash and Cash Equivalents: Cash in excess of operating requirements is invested in money market accounts which are carried at cost (which approximates fair value). The Company considers all highly liquid short-term investments with an original maturity of three months or less when purchased to be cash equivalents. Investments in Certificates of Deposit: Certificates of deposit are carried at cost (which approximates fair value).
Inventories	Inventories: Inventories are stated at lower of cost or market. Inventory costs are determined by the last-in, first-out ("LIFO") method and for certain subsidiaries by the first-in, first-out ("FIFO") method.
Property, Plant and Equipment	Property, Plant and Equipment: Property, plant and equipment is stated on the basis of cost less accumulated depreciation. Depreciation is provided by the straight-line method over the estimated useful lives of the related assets, which range from 15 to 30 years for buildings and improvements and 3 to 12 years for machinery and equipment. Assets under capital leases are amortized over the shorter of their estimated useful lives or the term of the related lease.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets: The Company reviews its long-lived assets for impairment when events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. During fiscal years 2019, 2018 and 2017, the Company concluded no impairment existed.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets: Goodwill represents the excess of purchase price over the fair value of net assets acquired. The Company does not amortize goodwill but evaluates for impairment annually, or whenever events or changes in circumstances indicate that the carrying value may not be recoverable. In accordance with the accounting standards, an entity has the option first to assess qualitative factors to determine whether events and circumstances indicate that it is more likely than not that goodwill is impaired. If after such assessment an entity concludes that the asset is not impaired, the entity is not required to take further action. However, if an entity concludes otherwise, it is required to determine the fair value of the asset using a quantitative impairment test, and if impaired, the associated assets must be written down to fair value. During fiscal years 2019, 2018 and 2017, the Company concluded no impairment existed. Intangible assets consist of customer relationship intangibles and trademarks. The Company amortizes the cost of other intangible assets over their estimated useful lives, which range from three to six years, unless such lives are deemed indefinite. During fiscal years 2019, 2018 and 2017, the Company concluded no impairment existed.
Promotional Displays	Promotional Displays: The Company invests in promotional displays in retail stores to demonstrate product features, product and quality specifications and to serve as a training tool for retail kitchen designers. The Company invests in these long-lived productive assets to provide the aforementioned benefits. The Company's investment in promotional displays is carried at cost less applicable amortization. Amortization is provided by the straight-line method on an individual display basis over periods of 24 to 60 months (the estimated period of benefit).
Income Taxes	Income Taxes: The Company accounts for deferred income taxes utilizing the asset and liability method, whereby deferred tax assets and liabilities are recognized based on the tax effects of temporary differences between the financial statement amounts and the tax basis of assets and liabilities, using enacted tax rates in effect for the year in which these items are expected to reverse. At each reporting date, the Company evaluates the need for a valuation allowance to adjust deferred tax assets and liabilities to an amount that more likely than not will be realized.
Pensions	Pensions: The Company has two non-contributory defined benefit pension plans covering many of the Company’s employees hired before April 30, 2012. Both defined benefit pension plans were frozen effective April 30, 2012. The Company recognizes the overfunded or underfunded status of its defined benefit pension plans, measured as the difference between the fair value of plan assets and the benefit obligation, in its consolidated balance sheets. The Company also recognizes the actuarial gains and losses and the prior service costs, credits and transition costs as a component of other comprehensive income (loss), net of tax.
Stock-Based Compensation	Stock-Based Compensation: The Company recognizes stock-based compensation expense based on the grant date fair value over the requisite service period.
Recent Accounting Pronouncements	Recent Accounting Pronouncements: In May 2014, the Financial Accounting Standards Board (the "FASB") issued Accounting Standards Update ("ASU") No. 2014-09, “Revenue from Contracts with Customers: Topic 606.” ASU 2014-09 supersedes the revenue recognition requirements in “Accounting Standard Codification 605 - Revenue Recognition” and most industry-specific guidance. The standard requires that entities recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which a company expects to be entitled in exchange for those goods or services. ASU 2014-09 permits the use of either the retrospective or cumulative effect transition method. In August 2015, the FASB issued ASU No. 2015-14, "Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date." ASU 2015-14 defers the effective date of ASU 2014-09 by one year to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that period. The Company adopted ASU 2014-09 as of May 1, 2018 and for periods thereafter using the modified retrospective approach, which was applied to all contracts not completed as of May 1, 2018. The cumulative effect of adopting the new revenue standard was not material. The comparative financial information has not been restated and continues to be reported under the accounting standards in effect for those periods. The adoption of this standard did not have a material impact on the twelve month period ended April 30, 2019 and the Company does not expect it to have a material impact on revenue or net income on an ongoing basis. See “Revenue Recognition” above for further information. In February 2016, the FASB issued ASU 2016-02, which requires lessees to recognize almost all leases on their balance sheet as a “right-of-use” asset and lease liability but recognize related expenses in a manner similar to current accounting. The guidance also eliminates current real estate-specific provisions for all entities. In January 2018, the FASB issued ASU 2018-01, which clarifies the application of the new leases guidance to land easements. In July 2018, the FASB issued ASU 2018-10 and ASU 2018-11, which clarify certain guidance included in ASU 2016-02 and introduces a new optional transition method. The standard is effective for annual periods beginning after December 15, 2018. The standard provides for the option to elect a package of practical expedients upon adoption. The Company intends to adopt the standard on May 1, 2019 and plans to elect the package of practical expedients to not reassess prior conclusions related to contracts containing leases, lease classification and initial direct costs and is evaluating the other practical expedients available under the guidance. The Company expects expanded financial statement note disclosure in addition to recognizing a right-of-use asset and lease liability for its operating leases on the balance sheet. In preparation for the adoption of the standard, the Company has procured a third-party software to track and manage the leases. Based on leases outstanding at April 30, 2019, the Company estimates the operating lease right-of-use asset and lease liability would have been in the range of $95 million to $115 million. The Company continues to evaluate the impacts of the pending adoption. As such, the Company’s preliminary assessments are subject to change. In March 2017, the FASB issued ASU No. 2017-07, "Compensation—Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost." ASU 2017-07 requires an employer to disaggregate the service cost component from the other components of net benefit (income) cost. The other components of net benefit (income) cost are required to be presented in the income statement separately from the service cost component and outside of operating income. The amendments also allow only the service cost component of net benefit (income) cost to be eligible for capitalization. The amendments in this ASU are effective for fiscal years beginning after December 15, 2017. The amendments in this ASU should be applied (1) retrospectively for the presentation of the service cost component and the other components of net periodic pension (income) cost and net periodic postretirement benefit (income) cost on the income statement, and (2) prospectively, on and after the effective date, for the capitalization of the service cost component of net periodic pension (income) cost and net periodic postretirement benefit (income) cost in assets. The Company adopted ASU 2017-07 as of May 1, 2018 and for periods thereafter using the retrospective approach. The adoption of this standard resulted in immaterial reclassifications from operating income in prior periods. The Company does not expect the adoption of this standard to have a material effect on our financial statements on an ongoing basis.
Use of Estimates	Use of Estimates: The preparation of consolidated financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during each reporting period. Actual results could differ from those estimates.
Reclassifications	Reclassifications: Certain reclassifications have been made to prior period balances to conform to the current year presentation.