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Debt and Available Credit Facilities (Details) - USD ($) $ in Thousands		3 Months Ended
	Nov. 30, 2022	Jul. 31, 2023	Jan. 31, 2023	Jul. 31, 2022	Apr. 30, 2023
Long-term Debt, by Current and Noncurrent [Abstract]
Short-term portion of long-term debt		$ 5,000			$ 5,000
Long-term debt, less current portion		890,917			743,292
Total debt		895,917			748,292
Unamortized debt issuance costs		$ 700			700
Amended and Restated RCA
Debt and Available Credit Facilities [Abstract]
Term of credit facility		5 years
Amortization of debt issuance costs		$ 300		$ 300
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		$ 700,370			551,535
Debt and Available Credit Facilities [Abstract]
Term of credit facility	5 years
Amount of financing available under credit facilities	$ 1,115,000
Payments of debt issuance costs			$ 4,500
Costs related to agreements, net			5,800
Write off of deferred costs			(200)
Existing credit commitments		600,600
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		190,547			$ 191,757
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		5.32%		2.83%
Weighted average interest rates		5.48%			4.76%