Derivative Financial Instruments	9 Months Ended
	Jan. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial InstrumentsThe Company records derivatives on the condensed consolidated balance sheets at fair value and establishes criteria for designation and effectiveness of hedging relationships. The nature of the Company’s business activities involves the management of various financial and market risks, including those related to changes in interest rates. The Company does not enter into derivative instruments for speculative purposes. In May 2013, the Company entered into certain interest rate swap arrangements to mitigate future interest rate risk associated with its long-term debt and designated these as cash flow hedges. These interest rates swaps were terminated in conjunction with the payoff of the outstanding long-term debt in September 2019.