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Income Taxes - Components of Income Tax Expense (Benefit) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Mar. 30, 2013
Income Tax Disclosure [Abstract]      
Current $ 77 $ 183 $ 299
Deferred (2,636) (1,525) 393
Valuation allowance $ 2,559 1,360 (672)
Income tax expense   $ 18 $ 20