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Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Accumulated other comprehensive income
Total accumulated other comprehensive loss balance as of April 30, 2022	$ (6,514)
Unrealized gain, net of $0 of taxes	53	$ (43)	$ (60)
Change in foreign currency translation adjustments	2,009	(6,814)	75
Total accumulated other comprehensive loss balance as of April 30, 2023	(4,452)	(6,514)
Available-for-sale securities
Accumulated other comprehensive income
Total accumulated other comprehensive loss balance as of April 30, 2022	(53)
Unrealized gain, net of $0 of taxes	53
Total accumulated other comprehensive loss balance as of April 30, 2023		(53)
Foreign Currency Translation Adjustments
Accumulated other comprehensive income
Total accumulated other comprehensive loss balance as of April 30, 2022	(6,461)
Change in foreign currency translation adjustments	2,009
Total accumulated other comprehensive loss balance as of April 30, 2023	(4,452)	(6,461)
Accumulated Other Comprehensive Income
Accumulated other comprehensive income
Total accumulated other comprehensive loss balance as of April 30, 2022	(6,514)
Unrealized gain, net of $0 of taxes	53	(43)	$ (60)
Change in foreign currency translation adjustments	2,009
Total accumulated other comprehensive loss balance as of April 30, 2023	$ (4,452)	$ (6,514)

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

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