CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $) In Thousands, except Share data, unless otherwise specified	Jan. 31, 2013	Jan. 31, 2012
Allowance for doubtful accounts receivable (in dollars)	$ 813	$ 972
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock shares authorized	100,000,000	100,000,000
Common stock shares issued	32,510,326	32,534,444
Common stock shares outstanding	32,470,542	32,494,660
Treasury stock, shares	39,784	39,784