Basis of Presentation	9 Months Ended
Jan. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete consolidated financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the nine-month period ended January 31, 2018 are not necessarily indicative of the results that may be expected for the fiscal year ending April 30, 2018. The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes in the Company's Annual Report on Form 10-K for the fiscal year ended April 30, 2017 filed with the U.S. Securities and Exchange Commission (“SEC”). On December 29, 2017, the Company successfully completed the acquisition of RSI Home Products, Inc. and subsidiaries (“RSI”). As a result of the RSI acquisition, the financial results of the Company for the three- and nine-month periods ended January 31, 2018 include the results of operation of RSI and its subsidiaries since the date of acquisition. Inventory: 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. The LIFO cost reserve is determined in the aggregate for inventory and is applied as a reduction to inventories determined on the FIFO method. FIFO inventory cost approximates replacement cost. Use of Estimates: The preparation of consolidated financial statements in conformity with U.S. GAAP 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. Examples of estimates include the allocation of fair value to assets acquired and liabilities assumed in acquisitions, pension obligations, useful lives of property and equipment and recoverability of goodwill and other intangible assets. Actual results could differ from those estimates. Goodwill and Other Intangible Assets: Goodwill represents the excess of purchase price over the net amount of identifiable assets acquired and liabilities assumed in a business combination measured at fair value. 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. When testing goodwill for impairment, 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, then the entity is not required to take further action. However, if an entity concludes otherwise, then 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. There were no impairment charges related to goodwill for the three- and nine-month periods ended January 31, 2018 and 2017. The Company amortizes the cost of other intangible assets over their estimated useful lives, which range up to six years, unless such lives are deemed indefinite. There were no impairment charges related to other intangible assets for the three- and nine-month periods ended January 31, 2018 and 2017.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete consolidated financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the nine-month period ended January 31, 2018 are not necessarily indicative of the results that may be expected for the fiscal year ending April 30, 2018. The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes in the Company's Annual Report on Form 10-K for the fiscal year ended April 30, 2017 filed with the U.S. Securities and Exchange Commission (“SEC”). On December 29, 2017, the Company successfully completed the acquisition of RSI Home Products, Inc. and subsidiaries (“RSI”). As a result of the RSI acquisition, the financial results of the Company for the three- and nine-month periods ended January 31, 2018 include the results of operation of RSI and its subsidiaries since the date of acquisition.

Inventory: 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.

The LIFO cost reserve is determined in the aggregate for inventory and is applied as a reduction to inventories determined on the FIFO method. FIFO inventory cost approximates replacement cost.

Use of Estimates: The preparation of consolidated financial statements in conformity with U.S. GAAP 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. Examples of estimates include the allocation of fair value to assets acquired and liabilities assumed in acquisitions, pension obligations, useful lives of property and equipment and recoverability of goodwill and other intangible assets. Actual results could differ from those estimates.

Goodwill and Other Intangible Assets: Goodwill represents the excess of purchase price over the net amount of identifiable assets acquired and liabilities assumed in a business combination measured at fair value. 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.

When testing goodwill for impairment, 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, then the entity is not required to take further action. However, if an entity concludes otherwise, then 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. There were no impairment charges related to goodwill for the three- and nine-month periods ended January 31, 2018 and 2017.

The Company amortizes the cost of other intangible assets over their estimated useful lives, which range up to six years, unless such lives are deemed indefinite. There were no impairment charges related to other intangible assets for the three- and nine-month periods ended January 31, 2018 and 2017.