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Note 11 - Stock-based Compensation - RSUs Activity (Details) - Restricted Stock Units (RSUs) [Member]
shares in Thousands
3 Months Ended
Apr. 30, 2018
$ / shares
shares
Restricted stock (in shares) | shares 653
Restricted stock, weighted average grant date fair value (in dollars per share) | $ / shares $ 25.10
Granted (in shares) | shares 2
Granted, weighted average grant date fair value (in dollars per share) | $ / shares $ 43.93
Released (in shares) | shares (11) [1]
Released, weighted average grant date fair value (in dollars per share) | $ / shares $ 26.04 [1]
Forfeited (in shares) | shares (13)
Forfeited, weighted average grant date fair value (in dollars per share) | $ / shares $ 24.54
Restricted stock (in shares) | shares 631
Restricted stock, weighted average grant date fair value (in dollars per share) | $ / shares $ 25.16
[1] The number of RSUs released includes shares withheld on behalf of employees to satisfy the minimum statutory tax withholding requirements.