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General and Summary of Significant Accounting Policies - Narrative (Detail) | 9 Months Ended | 12 Months Ended |  |  |
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Jan. 31, 2021 | May 01, 2022 USD ($) Segment | May 02, 2021 USD ($) | May 03, 2020 USD ($) | Feb. 01, 2021 | Jun. 22, 2018 | Jan. 01, 2017
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Number of Operating Segments | Segment |  |  | 2 |  |  |  |  |
Short-term investments (Available-for-Sale) |  |  |  | $ 5,500,000 |  |  |  |
Long-term investments (Rabbi Trust) |  |  | $ 9,357,000 | 8,415,000 |  |  |  |
Amortized cost of held-to-maturity investments |  |  |  | 4,300,000 |  |  |  |
Fair value of held-to-maturity investments |  |  |  | 4,300,000 |  |  |  |
Advertising costs, discontinued operations |  |  |  |  | $ 1,700,000 |  |  |
Advertising costs, continuing operations |  |  | 0 | 0 | 0 |  |  |
Interest costs incurred on lines of credit |  |  | 17,000 | 51,000 | 190,000 |  |  |
Interest costs incurred, discontinued operations |  |  |  |  | 84,000 |  |  |
Interest costs incurred, continuing operations |  |  | 17,000 | 51,000 | 106,000 |  |  |
Interest cost capitalized |  |  | 0 | 0 | 0 |  |  |
Asset impairment charges |  |  | 0 | 0 | 33,914,000 |  |  |
Asset impairment charges | [1] |  |  |  | 13,712,000 |  |  |
Goodwill - continuing operations |  |  | $ 0 | 0 |  |  |  |
Dividends received deduction percentage for earnings and profits received from foreign corporation |  |  | 100.00% |  |  |  |  |
Dividends received deduction, foreign corporation ownership percentage |  |  | 10.00% |  |  |  |  |
Selling, general and administrative expenses |  |  | $ 35,415,000 | 37,756,000 | 34,424,000 |  |  |
ASU 2019-12 [Member] |  |  |  |  |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] |  |  | true |  |  |  |  |
Change in Accounting Principle, Accounting Standards Update, Adoption Date |  |  | May 03, 2021 |  |  |  |  |
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] |  |  | true |  |  |  |  |
Shipping and Handling [Member] |  |  |  |  |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Selling, general and administrative expenses |  |  | $ 4,300,000 | 3,900,000 | 4,000,000.0 |  |  |
Discontinued Operations [Member] | eLuxury [Member] |  |  |  |  |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Asset impairment charges from discontinued operations | [2] |  |  |  | 20,202,000 |  |  |
Asset impairment charges |  |  |  |  | 20,200,000 |  |  |
Goodwill [Member] |  |  |  |  |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Asset impairment charges |  |  |  |  | 27,200,000 |  |  |
Trade Names [Member] |  |  |  |  |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Asset impairment charges |  |  |  |  | 6,700,000 |  |  |
Asset impairment charges |  |  |  |  | $ 143,000 |  |  |
Short-term Investments (Available-for-Sale) [Member] |  |  |  |  |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Unrealized gain (loss) on investments |  |  |  | 24,000 |  |  |  |
Long-term investments (Rabbi Trust) [Member] |  |  |  |  |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Unrealized gain (loss) on investments |  |  | $ 32,000 | $ 122,000 |  |  |  |
CIH [Member] |  |  |  |  |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Acquisition of additional ownership percentage |  |  |  | 50.00% |  | 50.00% |  |
Majority ownership percentage acquired |  |  |  |  |  | 100.00% |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  | 50.00%
Percentage of share earnings and losses |  | 50.00% |  |  | 50.00% |  |  |
eLuxury [Member] |  |  |  |  |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Majority ownership percentage acquired |  |  |  |  |  |  | 80.00% |
[1] | During fiscal 2020, we incurred asset impairment charges totaling $13.7 million, of which $13.6 million and $143,000 pertained to goodwill and a tradename associated with Read, respectively. Of this $13.7 million, $11.5 million and $2.2 million pertained to the mattress fabrics segment and upholstery fabrics segment, respectively.
[2] | During fiscal 2020, we recorded asset impairment charges totaling $20.2 million, of which $13.6 million and $6.6 million pertained to the goodwill and tradename, respectively. See Notes 8, 9, and 15 of the notes to the consolidated financial statements for further details of our assessments that resulted in the impairment of the goodwill and tradename associated with this discontinued operation.

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