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Note 3 - Acquisitions - Pro Forma Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2019
Revenues | $ 354,461 | $ 341,376 | $ 328,824
Net income | $ 51,302 | $ 33,727 | $ 25,370
Earnings per share |  |  |
Basic (in dollars per share) | $ 0.61 | $ 0.41 | $ 0.33
Diluted (in dollars per share) | $ 0.60 | $ 0.41 | $ 0.33

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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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