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Note 10 - Leases - Lease Costs (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Amortization of ROU assets		$ 33	$ 62	$ 87	$ 125
Interest on lease liabilities		3	8	5	18
Operating lease costs		426	694	882	587
Short-term lease costs (1)	[1]	59	13	245	72
Sub-lease income		(20)	(27)	(40)	(40)
Total Lease costs		$ 501	$ 750	$ 1,179	$ 762
[1] Includes variable lease costs, which are immaterial.

X

- Definition

Amount of interest expense on finance lease liability.

+ References

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X

- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

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X

- Definition

Amount of lease cost recognized by lessee for lease contract.

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X

- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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X

- Definition

Amount of sublease income excluding finance and operating lease expense.

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