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Note 10 - Leases - Lease Costs (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 30, 2021
Apr. 30, 2020
Amortization of ROU assets $ 54 $ 48
Interest on lease liabilities 13 19
Operating lease costs 648 612
Short-term lease costs (1) [1] 93 23
Sub-lease income (20) (20)
Total Lease costs $ 788 $ 682
[1] Includes variable lease costs, which are immaterial