Business And Summary Of Significant Accounting Policies (Details) (USD $)	3 Months Ended		9 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2014	Oct. 31, 2013	Jan. 31, 2014
Accounting Policies [Abstract]
Operating Expenses, Restatement and Remediation Related	$ 2,064,000	$ 14,979,000	$ 19,678,000	$ 28,965,000
Accounts receivable sold	333,300,000		333,300,000		263,700,000
Discount fees on sale of accounts receivable	700,000	600,000	3,400,000	2,000,000
Gain (Loss) Related to Litigation Settlement	$ 5,059,000	$ 22,914,000	$ 5,059,000	$ 22,914,000