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Accounts Receivables
 12 Months Ended
Jan. 31, 2021
Receivables [Abstract]  
Accounts Receivables Accounts Receivables
Accounts receivables from continuing operations consisted of the following (in thousands):
 As of January 31, 2021As of January 31, 2020
 CurrentTotalCurrentTotal
Accounts receivable$5,695 $5,695 $9,001 $9,001 
Less allowance for doubtful accounts(948)(948)(2,378)(2,378)
Accounts receivable net of allowance for doubtful accounts$4,747 $4,747 $6,623 $6,623