Note 8 - Accounts Receivables - Accounts Receivables From Continuing Operations (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Jan. 31, 2022
Accounts receivable, current	$ 4,497	$ 8,610
Accounts receivable, noncurrent	0	650
Accounts receivable	4,497	9,260
Less allowance for doubtful accounts, current	(504)	(484)
Less allowance for doubtful accounts, noncurrent	0	0
Less allowance for doubtful accounts	(504)	(484)
Accounts receivable net of allowance for doubtful accounts, current	3,993	8,126
Accounts receivable net of allowance for doubtful accounts, noncurrent	0	650
Accounts receivable net of allowance for doubtful accounts	$ 3,993	$ 8,776