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Schedule II - Valuation and Qualifying Accounts (Details) - SEC Schedule, 12-09, Allowance, Credit Loss [Member] - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2019
Jan. 31, 2018
Allowance for doubtful accounts receivable $ 469 $ 305
Allowance for doubtful accounts receivable, charges to expenses 140 247
Allowance for doubtful accounts receivable, write-offs [1] (272) (135)
Allowance for doubtful accounts receivable, other charges/ (Reversals) [2] 199 52
Allowance for doubtful accounts receivable $ 536 $ 469
[1] Uncollectible accounts charged off.
[2] Primarily related to recoveries from accounts previously charged off and currency translation.