Note 3 - Assets Held for Sale and Discontinued Operations - Held for Sale and Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021	Jan. 31, 2022
Loss recognized on classification as held for sale	$ 0		$ 0		$ (925)
Total assets of discontinued operations	0		0		159
Total liabilities of discontinued operations	0		0		953
Net loss from discontinued operations	(1,846)	$ (499)	(1,622)	$ (703)
Non-cash cumulative translation adjustment for discontinued operations			1,626	0
Sale of assets held for sale			382	3,187
Lease Pool Equipment [Member]
(Gross profit) loss from sale of assets held-for-sale			382	(388)
Discontinued Operations, Held-for-sale [Member]
Accounts receivable, net	0		0		177
Inventories, net	0		0		2
Prepaid expenses and other current assets	0		0		167
Seismic equipment lease pool and property and equipment, net	0		0		738
Total assets of discontinued operations	0		0		159
Accounts payable	0		0		132
Deferred revenue	0		0		73
Accrued expenses and other current liabilities	0		0		507
Income taxes payable	0		0		241
Total liabilities of discontinued operations	0		0		$ 953
Revenue from discontinued operations	0	53	0	840
Cost of discontinued operations	24	86	72	791
Selling, general and administrative	145	502	359	1,222
Recovery of doubtful accounts	0	(5)	0	(450)
Depreciation and amortization	0	1	0	4
Total operating expenses	145	498	359	776
Operating loss	(169)	(531)	(431)	(727)
Other (expenses) income (including $1,626 of cumulative translation loss)	(1,677)	41	(1,191)	37
Loss before income taxes from discontinued operations	(1,846)	(490)	(1,622)	(690)
Provision for income taxes from discontinued operations	0	(9)	0	(13)
Net loss from discontinued operations	$ (1,846)	$ (499)	(1,622)	(703)
Sale of assets held for sale			383	3,948
Discontinued Operations, Held-for-sale [Member] | Lease Pool Equipment [Member]
(Gross profit) loss from sale of assets held-for-sale			$ (382)	$ 388