Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Allowance for doubtful accounts receivable, current	$ 5,469	$ 5,331
Common stock, no par value	$ 0	$ 0
Common stock, shares authorized	300,000	300,000
Common stock, shares issued	115,722	112,902
Common stock, shares outstanding	115,722	112,902