Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.8.0.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Jan. 31, 2018
Jan. 31, 2017
Statement Of Financial Position [Abstract]    
Allowance for doubtful accounts receivable $ 16 $ 876
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 35,634,984 35,339,232
Common stock, shares outstanding 35,594,494 35,298,742
Treasury stock, common shares 40,490 40,490