Note 6 - Balance Sheet - Continuing Operations (Tables)

9 Months Ended

Oct. 31, 2021

Notes Tables

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	As of October 31, 2021			As of January 31, 2021
	(in thousands)
Accounts receivable	$	9,959		$	5,695
Less allowance for doubtful accounts		(481	)		(948	)
Accounts receivable net of allowance for doubtful accounts	$	9,478		$	4,747

Schedule of Inventory, Current [Table Text Block]

	October 31, 2021			January 31, 2021
	(in thousands)
Inventories:
Raw materials	$	6,796		$	6,905
Finished goods		3,561			3,466
Work in progress		2,478			2,445
		12,835			12,816
Less allowance for obsolescence		(1,337	)		(1,363	)
Total inventories, net	$	11,498		$	11,453

Property, Plant and Equipment [Table Text Block]

	October 31, 2021			January 31, 2021
	(in thousands)
Property and equipment:
Marine seismic service equipment	$	3,912		$	5,969
Land and buildings		4,479			4,354
Furniture and fixtures		9,962			9,750
Autos and trucks		495			491
		18,848			20,564
Accumulated depreciation and amortization		(14,502	)		(15,813	)
Total property and equipment, net	$	4,346		$	4,751