Note 6 - Balance Sheet - Continuing Operations - Schedule of Accounts Receivable (Details) - USD ($) $ in Thousands	Oct. 31, 2022	Jan. 31, 2022
Accounts receivable	$ 4,400	$ 9,260
Less allowance for doubtful accounts	(504)	(484)
Accounts receivable net of allowance for doubtful accounts	3,896	8,776
Other Current Assets [Member]
Accounts receivable	4,400	8,610
Less allowance for doubtful accounts	(504)	(484)
Accounts receivable net of allowance for doubtful accounts	3,896	8,126
Other Noncurrent Assets [Member]
Accounts receivable	0	650
Less allowance for doubtful accounts	0	0
Accounts receivable net of allowance for doubtful accounts	$ 0	$ 650