XML 53 R41.htm IDEA: XBRL DOCUMENT v3.19.2
STOCK-BASED COMPENSATION - Summary of Activity under Company's Stock Option Plans (Details) - $ / shares
shares in Thousands
3 Months Ended
Jan. 31, 2018
Jan. 31, 2017
Apr. 30, 2019
Apr. 30, 2018
STOCK-BASED COMPENSATION        
Shares, Outstanding, Beginning balance       1,140
Shares, Granted     92 97
Shares, Exercised     (59)  
Shares, Forfeited     (14)  
Shares, Outstanding, Ending balance 1,140 889 1,159 986
Shares, Exercisable     729 692
Weighted Average Exercise Price, Outstanding, Beginning balance       $ 44.01
Weighted Average Exercise Price, Granted     $ 50.30 37.60
Weighted Average Exercise Price, Exercised     26.36  
Weighted Average Exercise Price, Forfeited     51.13  
Weighted Average Exercise Price, Outstanding, Ending balance $ 44.01 $ 44.83 45.34 44.12
Weighted Average Exercise Price, Exercisable     $ 45.90 $ 44.01
Weighted Average Remaining Term (Years), Outstanding 7 years 6 months 15 days 7 years 10 months 28 days 7 years 7 months 21 days 7 years 10 months 24 days
Weighted Average Remaining Term (Years), Exercisable     6 years 8 months 1 day 7 years 1 month 10 days
Weighted Average Fair Value, Outstanding $ 11.22 $ 11.74 $ 11.42 $ 11.44
Weighted Average Fair Value, Exercisable     $ 11.97 $ 11.65