Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2021	Apr. 30, 2020
Finance lease cost
Amortization of ROU assets	$ 1,221	$ 1,820
Interest on lease liabilities	114	149
Finance lease cost	1,335	1,969
Operating lease cost	56,166	57,683
Short-term lease cost	474	1,111
Variable lease cost	11,592	13,562
Lease impairment cost		2,282
Sublease income	(657)	(447)
Total lease cost	$ 68,910	$ 76,160

Finance lease costs.

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- Definition

Finance lease costs.

+ References

No definition available.

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- Definition

Amount of interest expense on finance lease liability.

+ References

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- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

+ References

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- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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- Definition

Amount of loss from impairment of right-of-use asset from operating lease.

+ References

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

+ References

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Amount of sublease income excluding finance and operating lease expense.

+ References

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- Definition

Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

+ References

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