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Income Taxes - Deferred Tax Assets and Liabilities Current and Non Current (Details) - USD ($) $ in Thousands | May. 02, 2015 | Apr. 26, 2014
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Income Tax Disclosure [Abstract] |  |
Current assets | $ 10,640 | $ 10,694
Current liabilities | 0 | (27)
Non-current assets | 702 | 2,000
Non-current liabilities | (939) | (1)
Deferred tax assets, net | $ 10,403 | $ 12,666

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