Long-Term Debt - Maturities (Details) - USD ($) $ in Thousands	Apr. 30, 2019	Apr. 30, 2018
Debt maturities
2020	$ 42,237
2021	40,785
2022	80,901
2023	31,260
2024	21,772
Thereafter	939,661
Total	1,156,616
First Lien Term Loan
Debt maturities
2020	9,968
2021	9,968
2022	9,968
2023	9,968
2024	9,968
Thereafter	937,031
Total	986,871
Long Term Debt
Unamortized discount	2,149
Deferred financing costs	12,072
ABL Facility
Debt maturities
2022	43,972
Total	43,972
Capital Lease Obligations
Debt maturities
2020	27,906
2021	26,764
2022	23,344
2023	17,708
2024	10,934
Thereafter	2,630
Total	109,286
Installment notes
Debt maturities
2020	4,363
2021	4,053
2022	3,617
2023	3,584
2024	870
Total	16,487
Long Term Debt
Unamortized discount	1,200	$ 1,534
Installment notes
Long Term Debt
Unamortized discount	$ 1,200

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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