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Fair Value of Financial Instruments and Long Term Debt - Narrative (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Apr. 21, 2023 | Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2022
Debt Instrument |  |  |  |
Long-term debt and capital lease obligations |  | $ 1,375,000,000 | $ 1,437,000,000 |
Finance lease liabilities (Note 7) |  | $ 101,818,000 | $ 95,072,000 |
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] |  | Long-term debt and finance lease obligations, net of current maturities | Long-term debt and finance lease obligations, net of current maturities |
Interest income |  | $ 11,736,000 | $ 7,823,000 | $ 48,000
Capitalized interest |  | 3,363,000 | 3,631,000 | $ 2,031,000
Line of Credit | Revolving Credit Facility |  |  |  |
Debt Instrument |  |  |  |
Fair value of amount outstanding | $ 50,000,000 |  |  |
Line of Credit | Letter of Credit |  |  |  |
Debt Instrument |  |  |  |
Maximum borrowing capacity |  | 308,000 |  |
Line of Credit | New Credit Agreement Term Loan Facility |  |  |  |
Debt Instrument |  |  |  |
Maximum borrowing capacity | $ 250,000,000 |  |  |
Quarterly principal payment as a percentage | 1.25% |  |  |
Line of Credit | New Credit Agreement Revolving Credit Facility | Revolving Credit Facility |  |  |  |
Debt Instrument |  |  |  |
Maximum borrowing capacity | $ 850,000,000 |  |  |
Fair value of amount outstanding |  | 0 | 0 |
Line of Credit | Credit Facilities |  |  |  |
Debt Instrument |  |  |  |
Maximum increase in borrowing capacity | $ 900,000,000 |  |  |
Maximum increase in borrowing capacity as a percentage of consolidated EBITDA | 100.00% |  |  |
Line of Credit | Credit Facilities | Secured Overnight Financing Rate (SOFR) |  |  |  |
Debt Instrument |  |  |  |
Basis spread on variable rate | 0.10% |  |  |
Line of Credit | Credit Facilities | Adjusted Daily Simple Secured Overnight Financing Rate |  |  |  |
Debt Instrument |  |  |  |
Basis spread on variable rate | 1.00% |  |  |
Line of Credit | Credit Facilities | Fed Funds Effective Rate Overnight Index Swap Rate |  |  |  |
Debt Instrument |  |  |  |
Basis spread on variable rate | 0.50% |  |  |
Line of Credit | Term Loan Facility | Line of Credit |  |  |  |
Debt Instrument |  |  |  |
Fair value of amount outstanding |  | 237,500,000 | 250,000,000 |
Line of Credit | Bank Line |  |  |  |
Debt Instrument |  |  |  |
Fair value of amount outstanding |  | $ 0 | $ 0 |
Minimum | Line of Credit | New Credit Agreement Revolving Credit Facility | Revolving Credit Facility |  |  |  |
Debt Instrument |  |  |  |
Facility fee percentage | 0.15% |  |  |
Minimum | Line of Credit | Credit Facilities | Secured Overnight Financing Rate (SOFR) |  |  |  |
Debt Instrument |  |  |  |
Basis spread on variable rate | 0.00% |  |  |
Minimum | Line of Credit | Credit Facilities | Base Rate |  |  |  |
Debt Instrument |  |  |  |
Basis spread on variable rate | 1.10% |  |  |
Minimum | Line of Credit | Credit Facilities | Adjusted Daily Simple Secured Overnight Financing Rate |  |  |  |
Debt Instrument |  |  |  |
Basis spread on variable rate | 1.00% |  |  |
Minimum | Line of Credit | Credit Facilities | Alternate Base Rate |  |  |  |
Debt Instrument |  |  |  |
Basis spread on variable rate | 0.10% |  |  |
Maximum | Line of Credit | New Credit Agreement Revolving Credit Facility | Revolving Credit Facility |  |  |  |
Debt Instrument |  |  |  |
Facility fee percentage | 0.30% |  |  |
Maximum | Line of Credit | Credit Facilities | Base Rate |  |  |  |
Debt Instrument |  |  |  |
Basis spread on variable rate | 1.70% |  |  |
Maximum | Line of Credit | Credit Facilities | Alternate Base Rate |  |  |  |
Debt Instrument |  |  |  |
Basis spread on variable rate | 0.70% |  |  |

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