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Leases - Operating Lease Costs (Details)
$ in Thousands
3 Months Ended
Apr. 30, 2019
USD ($)
Leases [Abstract]  
Operating lease cost $ 5,706
Short-term lease cost 269
Variable lease cost and other, net 49
Total lease cost $ 6,024
Weighted average remaining term (years) 8 years 3 months 18 days
Weighted average discount rate 4.40%