Income Taxes (Schedule Of Significant Components Of Deferred Tax Liabilities And Assets) (Details) - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Income Tax Disclosure [Abstract]
Depreciation and amortization	$ 48,910	$ 53,939
Capitalized marketing program costs	7,525	6,547
Goodwill	7,581	8,545
Deferred costs currently deductible	4,110	5,415
Other, net	5,241	5,938
Total deferred tax liabilities	73,367	80,384
Accrued liabilities	41,509	42,071
Loss carryforwards	92,338	103,647
Amortizable goodwill	2,191	5,315
Depreciation and amortization	4,547	6,502
Disallowed interest expense	6,249	5,140
Acquisition and transaction related costs	5,605	0
Other, net	10,928	9,659
Deferred tax assets, gross, total	163,367	172,334
Less: valuation allowances	(46,764)	(60,165)
Total deferred tax assets	116,603	112,169
Net deferred tax asset	$ 43,236	$ 31,785