Income Taxes - Net Deferred Tax Assets and Deferred Tax Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Jan. 26, 2014	Jan. 27, 2013
Deferred tax assets
Current	$ 2,946	$ 7,473
Non-current	348	33,563
Subtotal	3,294	41,036
Deferred tax liabilities
Current	(930)	(4,221)
Non-current	(3,626)	(2,042)
Subtotal	(4,556)	(6,263)
Net deferred tax (liability) asset	$ (1,262)	$ 34,773

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

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Amount after allocation of valuation allowances of noncurrent deferred tax asset attributable to deductible temporary differences and carryforwards. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed within one year or operating cycle, if longer.

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- Definition

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