Debt - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
Line of Credit Facility [Line Items]
Line of credit, current borrowing capacity	$ 200,000
Line of credit, maximum borrowing capacity	400,000
Line of credit facility, maximum amount outstanding during period	120,000
Line of credit, remaining borrowing capacity	103,400
Line of credit, remaining maximum borrowing capacity	$ 303,400
Debt to EBITDA Ratio	0.37 to 1.0
Interest Expense Coverage Ratio	190.0 to 1.0
Letters of credit outstanding	$ 1,643	$ 2,901
Line of Credit Facility, Interest Rate Description	Under this revolving loan agreement, the Company has the option to select either a Eurocurrency rate loan that bears interest at the LIBOR rate plus a margin based on the Company's consolidated net leverage ratio or a base interest rate (based upon the higher of the federal funds rate plus 0.5%, the prime rate of the Bank of Montreal plus a margin based on the Company’s consolidated net leverage ratio, or the Eurocurrency base rate at the LIBOR rate plus a margin based on the Company’s consolidated net leverage ratio plus 1%).