Balance Sheet - Accounts Receivable (Detail) - USD ($) $ in Thousands	Oct. 31, 2020	Jan. 31, 2020
Current
Accounts receivable	$ 6,653	$ 9,001
Less allowance for doubtful accounts	(1,044)	(2,378)
Accounts receivable net of allowance for doubtful accounts	5,609	6,623
Long-term
Accounts receivable	0	0
Less allowance for doubtful accounts	0	0
Accounts receivable net of allowance for doubtful accounts	0	0
Total
Accounts receivable	6,653	9,001
Less allowance for doubtful accounts	(1,044)	(2,378)
Accounts receivable net of allowance for doubtful accounts	$ 5,609	$ 6,623