Business And Summary Of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2015	Oct. 31, 2014	Jan. 31, 2015
Accounting Policies [Abstract]
Operating Expenses, Restatement and Remediation Related	$ 47	$ 2,064	$ 829	$ 19,678
Gain (Loss) Related to Litigation Settlement	3,049	5,059	63,087	5,059
Accounts receivable sold	391,100		391,100		$ 310,900
Discount fees on sale of accounts receivable	$ 900	$ 700	$ 2,900	$ 3,400