Note 8 - Accounts Receivables - Accounts Receivables From Continuing Operations (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
Accounts receivable, current	$ 8,610	$ 5,695
Accounts receivable, noncurrent	650	0
Accounts receivable	9,260	5,695
Less allowance for doubtful accounts, current	(484)	(948)
Less allowance for doubtful accounts, noncurrent	0	0
Less allowance for doubtful accounts	(484)	(948)
Accounts receivable net of allowance for doubtful accounts, current	8,126	4,747
Accounts receivable net of allowance for doubtful accounts, noncurrent	650	0
Accounts receivable net of allowance for doubtful accounts	$ 8,776	$ 4,747