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Acquisitions - Pro Forma Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Jan. 31, 2024 | Jan. 31, 2023 | Jan. 31, 2022
Acquisitions |  |  |
Revenues | $ 574,947 | $ 538,222 | $ 496,064
Net income | $ 115,148 | $ 100,332 | $ 84,582
Earnings per share |  |  |
Basic (in dollars per share) | $ 1.35 | $ 1.18 | $ 1.00
Diluted (in dollars per share) | $ 1.33 | $ 1.16 | $ 0.98

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