Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

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Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Oct. 31, 2013
Jan. 31, 2013
Statement Of Financial Position [Abstract]    
Allowance for doubtful accounts receivable $ 333 $ 907
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 32,941,846 32,510,326
Common stock, shares outstanding 32,902,062 32,470,542
Treasury stock, shares 39,784 39,784