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v3.21.1

Notes, Loans Payable, and Financing Arrangements - Additional Information (Detail) - USD ($) |  | 12 Months Ended
--- | --- | ---
Aug. 24, 2020 | Apr. 30, 2021 | Apr. 30, 2020 | Apr. 30, 2019
Debt Instrument [Line Items] |  |  |  |
Amortization to interest expense for all debt issuance costs |  | $ 890,553 | $ 687,000 | $ 431,000
Notes Payable |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt issuance cost |  | 450,000 | $ 875,000 | $ 0
Debt issuance write-off costs |  | $ 689,000 |  |
Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Swingline Loan | $ 5,000,000.0 |  |  |
Swingline Loan |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest description of revolving line of credit |  | Each Swingline Loan (as defined in the Amended and Restated Credit Agreement) bears interest at the Base Rate, plus an applicable margin based on our consolidated leverage ratio. |  |
Unsecured Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Line of credit facility, borrowing capacity | 100,000,000.0 |  |  |
Interest description of revolving line of credit |  | The Revolving Line bears interest at either the Base Rate or LIBOR rate, plus an applicable margin based on our consolidated leverage ratio. |  |
Credit facility additional borrowing capacity option to increase maximum borrowing capacity | $ 50,000,000.0 |  |  |
Credit facility, maturity | Aug. 24, 2025 |  |  |
Credit Facilities |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Borrowings outstanding |  | $ 0 |  |
Outstanding letters of credit |  | 2,700,000 |  |
Credit Facilities | Self Insurance |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding letters of credit |  | $ 1,500,000 |  |
Credit Facilities | LIBOR Rate |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate on borrowings |  | 1.61% |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions 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 -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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