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Debt and Available Credit Facilities (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Nov. 30, 2022 | Jan. 31, 2024 | Apr. 30, 2023 | Jan. 31, 2023 | Jan. 31, 2024 | Jan. 31, 2023
Long-term Debt, by Current and Noncurrent [Abstract] |  |  |  |  |  |
Short-term portion of long-term debt |  | $ 6,250 | $ 5,000 |  | $ 6,250 |
Long-term debt, less current portion |  | 900,524 | 743,292 |  | 900,524 |
Total debt |  | 906,774 | 748,292 |  | 906,774 |
Unamortized debt issuance costs |  | 600 | 700 |  | 600 |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Payment of debt issuance cost |  |  |  |  | $ 0 | $ 4,493
Amended and Restated RCA |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Term of credit facility |  |  |  |  | 5 years |
Amortization of debt issuance costs |  | 300 |  | $ 300 | $ 900 | $ 800
Revolving Credit Facility Through November 2027 |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Term of credit facility |  |  |  |  | 18 months |
Revolving Credit Facility | Amended and Restated RCA |  |  |  |  |  |
Long-term Debt, by Current and Noncurrent [Abstract] |  |  |  |  |  |
Long-term debt, less current portion |  | 713,646 | 551,535 |  | $ 713,646 |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Term of credit facility | 5 years |  |  |  |  |
Amount of financing available under credit facilities | $ 1,115,000 |  |  |  |  |
Payment of debt issuance cost |  |  | 4,500 |  |  |
Costs related to agreements, net |  |  | 5,800 |  |  |
Write off of deferred costs |  |  |  | $ (200) |  |
Existing credit commitments |  | 587,400 |  |  | 587,400 |
Revolving Credit Facility | Amended and Restated RCA | Syndicate Bank Group led by Bank of America |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Optional credit limit increase available on request | 500,000 |  |  |  |  |
Value of minimum increments | $ 50,000 |  |  |  |  |
Revolving Credit Facility | Amended and Restated RCA | Minimum | Syndicate Bank Group led by Bank of America |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Line of credit facility fee percentage | 0.15% |  |  |  |  |
Revolving Credit Facility | Amended and Restated RCA | Maximum | Syndicate Bank Group led by Bank of America |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Line of credit facility fee percentage | 0.25% |  |  |  |  |
Revolving Credit Facility | SOFR, SONIA, and EURIBOR-Based Rates | Amended and Restated RCA | Minimum | Syndicate Bank Group led by Bank of America |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Applicable margin | 0.98% |  |  |  |  |
Revolving Credit Facility | SOFR, SONIA, and EURIBOR-Based Rates | Amended and Restated RCA | Maximum | Syndicate Bank Group led by Bank of America |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Applicable margin | 1.50% |  |  |  |  |
Revolving Credit Facility | Base Rate | Amended and Restated RCA | Syndicate Bank Group led by Bank of America |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Margin rate over reference rate used in determining base rate | 0.50% |  |  |  |  |
Revolving Credit Facility | Base Rate | Amended and Restated RCA | Minimum | Syndicate Bank Group led by Bank of America |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Applicable margin | 0.00% |  |  |  |  |
Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Amended and Restated RCA | Minimum |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Margin rate (as a percent) | 0.10% |  |  |  |  |
Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Amended and Restated RCA | Maximum |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Margin rate (as a percent) | 0.25% |  |  |  |  |
Revolving Credit Facility | Federal Funds Effective Rate | Amended and Restated RCA | Maximum | Syndicate Bank Group led by Bank of America |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Applicable margin | 0.50% |  |  |  |  |
Revolving Credit Facility | Daily Secured Overnight Financing Rate (SOFR) | Amended and Restated RCA | Syndicate Bank Group led by Bank of America |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Margin rate over reference rate used in determining base rate | 1.00% |  |  |  |  |
Term Loan A Facility | Amended and Restated RCA |  |  |  |  |  |
Long-term Debt, by Current and Noncurrent [Abstract] |  |  |  |  |  |
Long-term debt, less current portion |  | $ 186,878 | 191,757 |  | $ 186,878 |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Term of credit facility | 5 years |  |  |  |  |
Debt instrument, face amount | $ 200,000 |  |  |  |  |
Costs related to agreements, net |  |  | 800 |  |  |
Lender fees |  |  | 800 |  |  |
Non-lender fees |  |  | 100 |  |  |
Revolving Credit Facility Through May 2024 | Amended and Restated RCA |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Amount of financing available under credit facilities | $ 185,000 |  |  |  |  |
Costs related to agreements, net |  |  | 200 |  |  |
Revolving Credit Facility Through November 2027 | Amended and Restated RCA |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Costs related to agreements, net |  |  | $ 4,800 |  |  |
Line of Credit |  |  |  |  |  |
Debt and Available Credit Facilities [Abstract] |  |  |  |  |  |
Average interest rates on total debt outstanding |  | 5.66% |  | 4.70% | 5.52% | 3.78%
Weighted average interest rates |  | 5.50% | 4.76% |  | 5.50% |

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