XML 87 R71.htm IDEA: XBRL DOCUMENT v3.8.0.1
Financing Arrangements - Future minimum lease payments under non-cancelable operating leases (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2018
Jan. 31, 2017
Jan. 31, 2016
Operating Leased Assets [Line Items]      
Operating Leases, Total Rent and Lease Expense $ 2,104 $ 2,028 $ 2,095
Minimum lease payments      
2019 2,012    
2021 1,780    
2020 1,925    
2022 501    
2023 437    
Thereafter $ 0