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v3.21.1

Note 17 - Stock-based Compensation Plans (Tables) | 12 Months Ended
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Jan. 31, 2021
Notes Tables |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
Year Ended |  |  | January 31, |  |  |  | January 31, |  |  |  | January 31, |
|  |  | 2021 |  |  |  | 2020 |  |  |  | 2019 |
Cost of revenues |  |  | 319 |  |  |  | 220 |  |  |  | 160 |
Sales and marketing |  |  | 896 |  |  |  | 706 |  |  |  | 436 |
Research and development |  |  | 404 |  |  |  | 281 |  |  |  | 184 |
General and administrative |  |  | 4,694 |  |  |  | 3,702 |  |  |  | 2,930 |
Effect on net income |  |  | 6,313 |  |  |  | 4,909 |  |  |  | 3,710 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
Year Ended |  |  | January 31, 2021 |  |  |  | January 31, 2020 |  |  |  | January 31, 2019 |
Expected dividend yield (%) |  |  | - |  |  |  | - |  |  |  | - |
Expected volatility (%) |  |  | 26.4 |  |  |  | 23.5 |  |  |  | 23.6 |
Risk-free rate (%) |  |  | 0.7 |  |  |  | 1.4 |  |  |  | 2.0 |
Expected option life (years) |  |  | 5 |  |  |  | 5 |  |  |  | 5 |
Share-based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  | Number of Stock Options Outstanding |  |  |  | Weighted- Average Exercise Price |  |  |  | Weighted- Average Remaining Contractual Life (years) |  |  |  | Aggregate Intrinsic Value (in millions) |
Balance at January 31, 2019 |  |  | 879,338 |  |  | $ | 21.41 |  |  |  | 4.7 |  |  | $ | 8.7 |
Granted |  |  | 367,173 |  |  | $ | 38.06 |  |  |  |  |  |  |  |  |
Exercised |  |  | (94,970 | ) |  | $ | 15.62 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (23,719 | ) |  | $ | 31.93 |  |  |  |  |  |  |  |  |
Balance at January 31, 2020 |  |  | 1,127,822 |  |  | $ | 26.82 |  |  |  | 4.6 |  |  | $ | 20.2 |
Granted |  |  | 381,859 |  |  | $ | 41.51 |  |  |  |  |  |  |  |  |
Exercised |  |  | (338,342 | ) |  | $ | 18.43 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (23,619 | ) |  | $ | 33.88 |  |  |  |  |  |  |  |  |
Balance at January 31, 2021 |  |  | 1,147,720 |  |  | $ | 33.77 |  |  |  | 4.9 |  |  | $ | 28.1 |
Vested or expected to vest at January 31, 2021 |  |  | 1,147,720 |  |  | $ | 33.77 |  |  |  | 4.9 |  |  | $ | 28.1 |
Exercisable at January 31, 2021 |  |  | 646,065 |  |  | $ | 29.52 |  |  |  | 4.3 |  |  | $ | 18.6 |
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block] |
|  | Options Outstanding |  | Options Exercisable
Range of Exercise Prices |  |  | Weighted Average Exercise Price |  |  |  | Number of Stock Options |  |  |  | Weighted Average Remaining Contractual Life (years) |  |  |  | Weighted Average Exercise Price |  |  |  | Number of Stock Options |
$11.32 | – | $22.34 |  | $ | 21.06 |  |  |  | 220,559 |  |  |  | 2.9 |  |  | $ | 21.01 |  |  |  | 203,459 |
$25.65 | – | $27.23 |  | $ | 27.22 |  |  |  | 217,381 |  |  |  | 4.2 |  |  | $ | 27.23 |  |  |  | 186,707 |
$37.66 | – | $39.30 |  | $ | 38.09 |  |  |  | 636,869 |  |  |  | 5.7 |  |  | $ | 37.96 |  |  |  | 255,899 |
$49.04 | – | $55.04 |  | $ | 54.11 |  |  |  | 72,911 |  |  |  | 6.7 |  |  |  | - |  |  |  | - |
|  | $ | 33.77 |  |  |  | 1,147,720 |  |  |  | 4.9 |  |  | $ | 29.52 |  |  |  | 646,065 |
Schedule of Nonvested Share Activity [Table Text Block] |
|  |  | Number of Stock Options Outstanding |  |  |  | Weighted- Average Grant-Date Fair Value per Share |
Balance at January 31, 2019 |  |  | 325,218 |  |  | $ | 6.18 |
Granted |  |  | 367,173 |  |  | $ | 8.99 |
Vested |  |  | (259,269 | ) |  | $ | 6.96 |
Forfeited |  |  | (23,469 | ) |  | $ | 7.69 |
Balance at January 31, 2020 |  |  | 409,653 |  |  | $ | 8.03 |
Granted |  |  | 381,859 |  |  | $ | 10.19 |
Vested |  |  | (266,238 | ) |  | $ | 8.19 |
Forfeited |  |  | (23,619 | ) |  | $ | 4.87 |
Balance at January 31, 2021 |  |  | 501,655 |  |  | $ | 9.52 |
Share-based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block] |
|  |  | Number of PSUs Outstanding |  |  |  | Weighted- Average Granted Date Fair Value |  |  |  | Weighted- Average Remaining Contractual Life (years) |  |  |  | Aggregate Intrinsic Value (in millions) |
Balance at January 31, 2019 |  |  | 530,383 |  |  | $ | 18.02 |  |  |  | 5.5 |  |  | $ | 16.6 |
Granted |  |  | 53,729 |  |  | $ | 53.65 |  |  |  |  |  |  |  |  |
Performance units issued |  |  | 45,762 |  |  | $ | 23.24 |  |  |  |  |  |  |  |  |
Balance at January 31, 2020 |  |  | 629,874 |  |  | $ | 21.19 |  |  |  | 5.0 |  |  | $ | 28.2 |
Granted |  |  | 85,334 |  |  | $ | 54.24 |  |  |  |  |  |  |  |  |
Performance units issued |  |  | 40,665 |  |  | $ | 29.08 |  |  |  |  |  |  |  |  |
Balance at January 31, 2021 |  |  | 755,873 |  |  | $ | 25.17 |  |  |  | 4.7 |  |  | $ | 44.0 |
Vested or expected to vest at January 31, 2021 |  |  | 755,873 |  |  | $ | 25.17 |  |  |  | 4.7 |  |  | $ | 44.0 |
Exercisable at January 31, 2021 |  |  | 562,459 |  |  | $ | 17.21 |  |  |  | 3.5 |  |  | $ | 32.8 |
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  |  | Number of RSUs Outstanding |  |  |  | Weighted- Average Granted Date Fair Value |  |  |  | Weighted- Average Remaining Contractual Life (years) |  |  |  | Aggregate Intrinsic Value (in millions) |
Balance at January 31, 2019 |  |  | 337,066 |  |  | $ | 14.42 |  |  |  | 5.6 |  |  | $ | 10.6 |
Granted |  |  | 37,611 |  |  | $ | 38.04 |  |  |  |  |  |  |  |  |
Balance at January 31, 2020 |  |  | 374,677 |  |  | $ | 16.57 |  |  |  | 5.0 |  |  | $ | 16.8 |
Granted |  |  | 57,518 |  |  | $ | 43.25 |  |  |  |  |  |  |  |  |
Balance at January 31, 2021 |  |  | 432,195 |  |  | $ | 19.98 |  |  |  | 4.7 |  |  | $ | 25.2 |
Vested or expected to vest at January 31, 2021 |  |  | 432,195 |  |  | $ | 19.98 |  |  |  | 4.7 |  |  | $ | 25.2 |
Exercisable at January 31, 2021 |  |  | 375,845 |  |  | $ | 16.50 |  |  |  | 4.1 |  |  | $ | 21.9 |
Schedule Of Cash Settled Restricted Share Unit Plan Activity [Table Text Block] |
|  |  | Number of CRSUs Outstanding |  |  |  | Weighted- Average Remaining Contractual Life (years) |
Balance at January 31, 2019 |  |  | 45,063 |  |  |  | 1.6 |
Granted |  |  | 30,086 |  |  |  |  |
Vested and settled in cash |  |  | (32,422 | ) |  |  |  |
Balance at January 31, 2020 |  |  | 42,727 |  |  |  | 1.6 |
Granted |  |  | 26,629 |  |  |  |  |
Vested and settled in cash |  |  | (30,340 | ) |  |  |  |
Forfeited |  |  | (248 | ) |  |  |  |
Balance at January 31, 2021 |  |  | 38,628 |  |  |  | 1.5 |
Non-vested at January 31, 2021 |  |  | 38,628 |  |  |  | 1.5 |

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