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Significant Accounting Policies - Reconciliation of Net Income/(Loss) Amounts and Weighted Average Number of Common and Common Equivalent Shares Used to Determine Basic and Diluted (Loss)/Earnings per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2024
Net income/(loss)
Net income	$ 18,481	$ 13,425	$ 41,363
Weighted average shares outstanding — Basic	44,420	44,484	45,813
Effect of dilutive stock awards	513	448	436
Weighted average shares outstanding — Diluted	44,933	44,932	46,248
Earnings per share - Basic	$ 0.42	$ 0.3	$ 0.9
Earnings per share - Diluted	$ 0.41	$ 0.3	$ 0.89

X

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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