Income Taxes (Schedule Of Significant Components Of Deferred Tax Liabilities And Assets) (Details) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Income Tax Disclosure [Abstract]
Depreciation and amortization	$ 70,800	$ 81,679
Capitalized marketing program costs	4,722	3,456
Goodwill	6,108	4,004
Deferred costs currently deductible	6,094	4,870
Other, net	7,491	5,074
Total deferred tax liability	95,215	99,083
Accrued liabilities	50,665	50,039
Loss carryforwards	125,914	124,536
Deferred Tax Liabilities, Goodwill and Intangible Assets	11,915	15,253
Depreciation and amortization	7,699	6,706
Disallowed interest expense	38,481	28,069
Other, net	10,149	12,908
Deferred tax assets, gross, total	244,823	237,511
Less: valuation allowances	(101,340)	(142,375)
Total deferred tax assets	143,483	95,136
Deferred Tax Assets, Net	48,268
Total deferred tax liabilities		$ (3,947)