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Lines of Credit - Narrative (Detail) |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 20, 2024 CNY (¥) | Jan. 19, 2023 USD ($) | Apr. 28, 2024 USD ($) | Apr. 30, 2023 USD ($) | May 01, 2022 USD ($) | Apr. 28, 2024 CNY (¥) | Apr. 28, 2023 USD ($)
Revolving Credit Facility [Member] | United States [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable interest rate at end of period |  |  | 6.81% | 6.30% |  | 6.81% |
Reference rate on which the interest rate is based |  |  | SOFR |  |  |  |
Line of credit facility, available borrowing |  |  | $ 18,500,000 |  |  |  |
Letters of credit, outstanding amount |  |  | 535,000 | $ 275,000 |  |  |
Outstanding amount |  |  | 0 | 0 |  |  |
Interest paid during the year |  |  | $ 11,000 | $ 8,000 | $ 10,000 |  |
Revolving Credit Facility [Member] | United States [Member] | ABL Credit Agreement [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity |  | $ 35,000,000 |  |  |  |  |
Expiration date |  | Jan. 19, 2026 |  |  |  |  |
Maximum amount of letters of credit |  | $ 1,000,000 |  |  |  |  |
Line of credit facility, accounts receivable, borrowing base percentage |  | 85.00% |  |  |  |  |
Line of credit facility, borrowing base percentage of eligible inventory value |  | 65.00% |  |  |  |  |
Line of credit facility, borrowing base percentage of net-orderly-liquidation value of eligible inventory value |  | 85.00% |  |  |  |  |
Line of credit facility, borrowing base percentage of eligible in-transit inventory value |  | 65.00% |  |  |  |  |
Line of credit facility, borrowing base percentage of net-orderly-liquidation value of eligible in-transit inventory value |  | 85.00% |  |  |  |  |
Line of credit facility, borrowing base eligible in-transit inventory value |  | $ 5,000,000 |  |  |  |  |
Line of credit facility, borrowing base percentage of eligible raw material inventory value |  | 65.00% |  |  |  |  |
Line of credit facility, borrowing base percentage of net-orderly-liquidation value of eligible raw material inventory value |  | 85.00% |  |  |  |  |
Line of credit stated amount to determine borrowing base |  | $ 22,500,000 |  |  |  |  |
Line of credit facility, equal to eligible accounts receivable, borrowing base percent |  | 200.00% |  |  |  |  |
Line of credit facility, commitment fee percentage |  | 37.50% |  |  |  |  |
Annual servicing fee |  | $ 12,000 |  |  |  |  |
Debt instrument, interest rate terms |  |  | The ABL Facility permits both base rate borrowings and borrowings based upon daily simple SOFR (the secured overnight financing rate administered by the Federal Reserve Bank of New York (or its successor)). Borrowings under the ABL Facility bear interest at an annual rate equal to daily simple SOFR plus 150 basis points (if the average monthly excess availability under the ABL Facility is greater than 50%) or 175 basis points (if the average monthly excess availability under the ABL Facility is less than or equal to 50%) or 50 basis points above base rate (if the average monthly excess availability under the ABL Facility is greater than 50%) or 75 basis points above base rate (if the average monthly excess availability under the ABL Facility is less than or equal to 50%), as applicable, with a fee on unutilized commitments at an annual rate of 37.5 basis points and an annual servicing fee of $12,000. |  |  |  |
Threshold amount to determine excess borrowing availability |  | $ 35,000,000 |  |  |  |  |
Number of consecutive days in which if no event of default occurs, the compliance period ends |  | 60 days |  |  |  |  |
Line of credit facility, fixed charge ratio |  | 1.1 |  |  |  |  |
Revolving Credit Facility [Member] | United States [Member] | Minimum [Member] | ABL Credit Agreement [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Line of credit facility, excess borrowing ability |  | $ 7,000,000 |  |  |  |  |
Line of credit facility, covenant, excess borrowing availability |  | $ 5,250,000 |  |  |  |  |
Revolving Credit Facility [Member] | United States [Member] | Minimum [Member] | Secured Overnight Financing Rate (SOFR) [Member] | ABL Credit Agreement [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, basis spread on interest rate |  | 150.00% |  |  |  |  |
Revolving Credit Facility [Member] | United States [Member] | Minimum [Member] | Base Rate [Member] | ABL Credit Agreement [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, basis spread on interest rate |  | 50.00% |  |  |  |  |
Revolving Credit Facility [Member] | United States [Member] | Maximum [Member] | ABL Credit Agreement [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Line of credit facility, excess borrowing ability |  | $ 7,000,000 |  |  |  |  |
Line of credit facility, covenant, excess borrowing availability |  | $ 5,250,000 |  |  |  |  |
Revolving Credit Facility [Member] | United States [Member] | Maximum [Member] | Secured Overnight Financing Rate (SOFR) [Member] | ABL Credit Agreement [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, basis spread on interest rate |  | 175.00% |  |  |  |  |
Revolving Credit Facility [Member] | United States [Member] | Maximum [Member] | Base Rate [Member] | ABL Credit Agreement [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, basis spread on interest rate |  | 75.00% |  |  |  |  |
Revolving Credit Facility [Member] | United States [Member] | Letters of Credit [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Remaining letters of credit |  |  | $ 465,000 |  |  |  |
Revolving Credit Facility [Member] | China [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Applicable interest rate at end of period |  |  | (2.95%) |  |  | (2.95%) |
Revolving credit agreements [Member] | United States [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Expiration date | Apr. 26, 2024 |  |  |  |  |  |
Revolving credit agreements [Member] | China [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity | ¥ 1,000,000 |  | $ 4,000,000 |  |  | ¥ 29,000,000 |
Outstanding amount |  |  | 0 |  |  |  |
Revolving credit agreements [Member] | China [Member] | Bank Of China [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 4,800,000 |  |  | ¥ 35,000,000 |
Expiration date |  |  | Oct. 24, 2024 |  |  |  |
Interest rate description |  |  | Interest charged under this agreement is based on an interest rate determined by the Chinese government at the time of borrowing |  |  |  |
Revolving credit agreements [Member] | China [Member] | Chinese Yuan Renminbi [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Outstanding amount |  |  | $ 0 |  |  |  | $ 0
Revolving credit agreements [Member] | China [Member] | Credit Agreement Expires March 7, 2025 [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity | ¥ | 9,600,000 |  |  |  |  |  |
Revolving credit agreements [Member] | China [Member] | Credit Agreement Expires March 8, 2025 [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity | ¥ | 9,700,000 |  |  |  |  |  |
Revolving credit agreements [Member] | China [Member] | Credit Agreement Expires March 9, 2025 [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity | ¥ | ¥ 9,700,000 |  |  |  |  |  |
Revolving credit agreements [Member] | China [Member] | Base Rate [Member] |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, basis spread on interest rate | 50.00% |  |  |  |  |  |

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- Definition Percentage of line of credit facility, accounts receivable, borrowing base. + References No definition available. + Details
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- Definition Line of credit facility, barrowing base percentage of net-orderly-liquidation value of eligible in-transit inventory value. + References No definition available. + Details
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- Definition Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-2 + Details
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- Definition Amount of the fee for available but unused credit capacity under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481544/470-10-50-6 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481573/470-10-45-13 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481573/470-10-45-14 + Details
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