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Net income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 31, 2020 | Oct. 31, 2019 | Oct. 31, 2020 | Oct. 31, 2019
Earnings Per Share [Abstract] |  |  |  |
Net income | $ 4,480 | $ 3,892 | $ 3,335 | $ 6,692
Weighted average shares outstanding - basic (shares) | 15,733 | 15,654 | 15,566 | 15,568
Net effect of dilutive share-based on the treasury stock method using average market price (shares) | 34 | 56 | 20 | 53
Totals (shares) | 15,767 | 15,710 | 15,586 | 15,621
Net income (loss) per share - basic (usd per share) | $ 0.28 | $ 0.25 | $ 0.21 | $ 0.43
Net income (loss) per share - diluted (usd per share) | $ 0.28 | $ 0.25 | $ 0.21 | $ 0.43

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