Income Taxes - Net Deferred Tax Assets and Deferred Tax Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Jan. 27, 2013	Jan. 29, 2012
Deferred tax assets
Current	$ 7,473	$ 5,339
Non-current	33,563	0
Subtotal	41,036	5,339
Deferred tax liabilities
Current	(4,221)	(4,041)
Non-current	(2,042)	(1,000)
Subtotal	(6,263)	(5,041)
Net deferred tax asset	$ 34,773	$ 298

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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