Leases - Summary of Future Lease Payments for Operating and Finance Leases (Detail) - USD ($) $ in Thousands	Jul. 31, 2021	Apr. 30, 2021
Operating and Finance Lease liabilities payments
2022	$ 3,474
2023	4,655
2024	4,701
2025	3,514
2026	3,546
Thereafter	45,952
Total future lease payments	65,842
Less amounts representing interest	(21,539)
Present value of lease payments	44,303
Less current maturities of lease liabilities	(2,450)
Long-term maturities of lease liabilities	41,853
Operating Leases
2022	1,179
2023	1,584
2024	1,576
2025	334
2026	311
Thereafter	404
Total future lease payments	5,388
Less amounts representing interest	(695)
Total operating lease liabilities	4,693
Less current maturities of lease liabilities	(1,349)	$ (1,309)
Long-term maturities of lease liabilities	3,344
Financing Leases
2022	2,295
2023	3,071
2024	3,125
2025	3,180
2026	3,235
Thereafter	45,548
Total future lease payments	60,454
Less amounts representing interest	(20,844)
Total finance lease liabilities	39,610
Less current maturities of lease liabilities	(1,101)	(1,087)
Long-term maturities of lease liabilities	$ 38,509	$ 38,786

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Lessee operating and finance lease liability payments due after year four.

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Lessee operating and finance lease liability payments due year four.

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Lessee operating and finance lease liability payments due year one.

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Lessee operating and finance lease liability payments due year three.

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Lessee operating and finance lease liability payments due year two.

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Lessee operating and finance lease liability payments remainder of fiscal year.

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Operating and finance lease liability noncurrent.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

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