Long-Term Debt - Components (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Apr. 30, 2020
Long-term debt
Carrying value of debt	$ 994,150	$ 1,097,480
Less current portion	51,552	50,201
Long-term debt	942,598	1,047,279
Term Loan Facility
Long-term debt
Carrying value of debt	869,426	876,903
Unamortized discount and deferred financing costs	(9,011)	(10,602)
ABL Facility
Long-term debt
Carrying value of debt		80,000
Finance lease obligations
Long-term debt
Carrying value of debt	122,020	128,767
Installment notes
Long-term debt
Carrying value of debt	12,544	16,316
Unamortized discount	$ (829)	$ (1,098)
Interest rate	5.00%	5.00%
Canadian Facility
Long-term debt
Carrying value of debt		$ 7,194

Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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