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Stock-Based Compensation and Stock Options - Stock Compensation Expense for Time Based Options and Performance Based Options (Detail) - USD ($) | 3 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Effect on basic earnings per share | $ (1.26) | $ (1.16)
Effect on diluted earnings per share | $ (1.25) | $ (1.14)
Time Based Options and Performance Based Options [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Total cost of stock-based compensation included in income before income tax provision | $ 1,070,000 | $ 1,312,000
Amount of income tax benefit recognized | (246,000) | (290,000)
Amount charged against net income | $ 824,000 | $ 1,022,000
Effect on basic earnings per share | $ (0.05) | $ (0.06)
Effect on diluted earnings per share | $ (0.05) | $ (0.06)
Time Based Options and Performance Based Options [Member] | Cost of Revenues [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Total cost of stock-based compensation included in income before income tax provision | $ 715,000 | $ 668,000
Time Based Options and Performance Based Options [Member] | General and Administrative [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Total cost of stock-based compensation included in income before income tax provision | $ 355,000 | $ 644,000

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