Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Oct. 31, 2018
Jan. 31, 2018
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts receivable $ 16 $ 16
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 35,795,099 35,634,984
Common stock, shares outstanding 35,754,609 35,594,494
Treasury stock, common shares 40,490 40,490