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Note 10 - Leases - Lease Costs (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 30, 2020
Apr. 30, 2019
Amortization of ROU assets $ 48 $ 51
Interest on lease liabilities 19 9
Operating lease costs 612 551
Short-term lease costs (1) [1] 23 176
Sub-lease income (20) (20)
Total Lease costs $ 682 $ 767
[1] Includes variable lease costs, which are immaterial