Note 6 - Balance Sheet - Continuing Operations (Tables)

9 Months Ended

Oct. 31, 2022

Notes Tables

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

	As of October 31, 2022								As of January 31, 2022
	(in thousands)
	Current			Long-term		Total			Current			Long-term		Total
Accounts receivable	$	4,400		$	—	$	4,400		$	8,610		$	650	$	9,260
Less allowance for doubtful accounts		(504	)		—		(504	)		(484	)		—		(484	)
Accounts receivable net of allowance for doubtful accounts	$	3,896		$	—	$	3,896		$	8,126		$	650	$	8,776

Schedule of Inventory, Current [Table Text Block]

	October 31, 2022			January 31, 2022
	(in thousands)
Inventories:
Raw materials	$	9,810		$	8,511
Finished goods		4,510			3,806
Work in progress		4,437			3,567
Cost of inventories		18,757			15,884
Less allowance for obsolescence		(1,920	)		(1,878	)
Total inventories, net	$	16,837		$	14,006

Property, Plant and Equipment [Table Text Block]

	October 31, 2022			January 31, 2022
	(in thousands)
Property and equipment:
Furniture and fixtures	$	10,038		$	9,865
Autos and trucks		359			495
Marine seismic service equipment		—			3,880
Land and buildings		4,845			4,555
Cost of property and equipment		15,242			18,795
Accumulated depreciation and amortization		(11,139	)		(14,523	)
Total property and equipment, net	$	4,103		$	4,272