Leases - Supplemental Cash Flow Information (Details)
$ in Thousands
3 Months Ended
Apr. 30, 2019
USD ($)
Cash paid for amounts included in the measurement of lease liabilities:  
Operating cash flows from operating leases $ 2,167
Operating cash flows from finance leases 66
Financing cash flows from finance leases 1,014
Right-of-use assets obtained in exchange for lease obligations:  
Operating leases 0
Finance leases $ 486
Weighted-average remaining lease term (in years):  
Operating leases 6 years 7 months 6 days
Finance leases 1 year 8 months 12 days
Weighted-average discount rate:  
Operating leases 6.40%
Finance leases 4.80%
Cash paid for lease liability accretion $ 800