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Income Taxes - Income Tax Expense (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Apr. 27, 2014
Jan. 26, 2014
Oct. 27, 2013
Jul. 28, 2013
Apr. 28, 2013
Jan. 27, 2013
Oct. 28, 2012
Jul. 29, 2012
Apr. 27, 2014
Apr. 28, 2013
Apr. 29, 2012
current                      
federal                     $ 79
state                   19  
foreign                 3,323 2,297 2,505
current income tax expense                 3,323 2,316 2,584
deferred                      
federal                 1,065 192 727
state                 416 14 55
undistributed earnings - foreign subsidiaries                 (5,018) 7,011  
U.S. operating loss carryforwards                 1,838 3,665 1,102
foreign                 (42) 608 143
valuation allowance                 14 (11,834) (3,709)
deferred income tax expense                 (1,727) (344) (1,682)
income tax expense $ 1,380 $ (3,807) $ 1,718 $ 2,305 $ 2,161 $ 1,700 $ (3,736) $ 1,848 $ 1,596 $ 1,972 $ 902