XML 101 R86.htm IDEA: XBRL DOCUMENT v3.19.1
Stock-Based Compensation - Schedule of Transactions for Restricted Stock Units Under Plan (Details) - Stock Award Units - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Jan. 31, 2019
Jan. 31, 2018
Jan. 31, 2017
Number of Stock Award Units      
Stock Award Units, Beginning Balance 342,770 381,158 374,598
Units granted 228,310 133,245 187,777
Units vested (112,170) (115,574) (170,010)
Units forfeited (11,888) (56,059) (11,207)
Stock Award Units, Ending Balance 447,022 342,770 381,158
Weighted Average Grant Date Fair Value      
Weighted Average Grant Date Fair Value, Beginning Balance $ 26.07 $ 31.71 $ 33.83
Units granted, Weighted Average Grant Date Fair Value 39.22 23.31 27.76
Units vested, Weighted Average Grant Date Fair Value 27.60 39.44 31.85
Units forfeited, Weighted Average Grant Date Fair Value 30.82 30.27 34.50
Weighted Average Grant Date Fair Value Ending Balance $ 32.27 $ 26.07 $ 31.71
Weighted-Average Remaining Contractual Term (years)      
Units outstanding, Weighted-Average Remaining Contractual Term (years) 1 year 4 months 24 days    
Aggregate Intrinsic Value      
Units outstanding, Aggregate Intrinsic Value $ 14,282