Subsequent Event	12 Months Ended
Apr. 30, 2021
Subsequent Events [Abstract]
Subsequent Event	Subsequent EventOn May 11, 2021, the Company entered into a definitive agreement to acquire substantially all the assets of Westside Building Material ("Westside"), one of the largest independent distributors of interior building products in the U.S., for $135.0 million in cash. Westside is a leading supplier of steel framing, wallboard, acoustical ceilings, insulation and related building products serving commercial and residential markets. Westside’s distribution network comprises ten locations, including nine across California (Anaheim, Hesperia, Oakland, Chatsworth, Fresno, Lancaster, Santa Maria, San Diego and National City) and one in Las Vegas, NV. The transaction is expected to close in the third calendar quarter of 2021, subject to the satisfaction of customary closing conditions.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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