Note 6 - Balance Sheet - Continuing Operations - Schedule of Accounts Receivable (Details) - USD ($) $ in Thousands	Jul. 31, 2022	Jan. 31, 2022
Accounts receivable	$ 6,928	$ 9,260
Less allowance for doubtful accounts	(484)	(484)
Accounts receivable net of allowance for doubtful accounts	6,444	8,776
Other Current Assets [Member]
Accounts receivable	7,141	8,610
Less allowance for doubtful accounts	(484)	(484)
Accounts receivable net of allowance for doubtful accounts	6,657	8,126
Other Noncurrent Assets [Member]
Accounts receivable	213	650
Less allowance for doubtful accounts	0	0
Accounts receivable net of allowance for doubtful accounts	$ 213	$ 650