Income Taxes (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Income Taxes (Textual) [Abstract]
Effective tax rate from continuing operations	35.00%
Income taxes paid	$ 296	$ 3,743	$ 9,026
Net operating loss carryforward	212,271
Net operating loss carryforwards expiration dates	years ending January 31, 2026 through January 31, 2033
Charitable contribution deduction carryforward	27,326
Charitable contribution deduction carryforward expiration dates	years ending January 31, 2014 through January 31, 2018
General Business credits carryovers	21,159
General Business Credit Carryovers, Expiration Dates	years ending January 31, 2019 through January 31, 2033
Alternative Minimum Tax credits	27,452
Net deferred tax asset unrecognized		17,299
Unrecognized tax benefits	584	788	408
Accrued interest and penalties	164	154
Income tax expense (benefit)	10	54	(424)
Effective unrecognized tax benefits	$ 286	$ 357