CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jan. 31, 2013	Jan. 31, 2012
Allowance for Doubtful Accounts Receivable, Current	$ 9,710	$ 11,772
Preferred Stock, par value	$ 0.01	$ 0.01
Preferred Stock, shares authorized	2,000	2,000
Preferred Stock, issued
Preferred Stock, outstanding
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	240,000	240,000
Common Stock, issued	126,934	126,676
Common Stock, outstanding	126,934	126,676