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Stockholders' Equity - Reconciliation of Net Income Amounts and Weighted Average Number of Common and Common Equivalent Shares Used to Determine Basic and Diluted Earnings per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Jul. 31, 2025
Jul. 31, 2024
Net Loss    
Basic earnings $ (3,411) $ (1,855)
Effect of dilutive stock awards 0 0
Diluted earnings $ (3,411) $ (1,855)
Weighted average shares outstanding — Basic 44,262 45,321
Effect of dilutive stock awards 0 0
Weighted average shares outstanding — Diluted 44,262 45,321
Earnings per share - Basic    
Net income $ (0.08) $ (0.04)
Earnings per share - Diluted    
Net income (0.08) (0.04)
Earnings Per Share - Effect of Dilutive Stock Awards    
Effect of dilutive stock awards $ 0 $ 0