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Condensed Consolidated Statements of Operations (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2019
Jan. 31, 2018
Jan. 31, 2017
Costs of subscription services      
Share-based compensation expense $ 36,754 $ 26,280 $ 20,773
Costs of professional services      
Share-based compensation expense 55,535 37,592 26,833
Product development      
Share-based compensation expense 320,876 229,819 166,529
Sales and marketing      
Share-based compensation expense 132,810 100,762 86,229
General and administrative      
Share-based compensation expense $ 127,443 $ 83,972 $ 78,265